The Coin Compendium (CC) is a 100% free educational public charity. Since its founding in 2010, the CC has grown to become one of the world's largest independent academic research sources in the science of numismatics. To keep the CC operating within our tiny budget, we have been forced to restrict access to only active Coin Compendium Forum (CCF) members. To gain immediate access, simply register as a member of CCF, then post a CC account request. You can participate in forum discussions to remain active. We thank you for your support, and your understanding.


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The Coin Compendium records all known coin types, specimens, sightings, and images. It also records information ABOUT the types and specimens, such as pricing, ownership history, condition changes over time via the photographic record, grade and grading services, conservation status, fakes, and varieties. The Coin Compendium was built to record enormous quantity of data, while also making the data useful. The results are truly incredible. It is now easy to surf on top of enormous quantities of data, in a pleasant and informative way, without sinking and drowning in the data.

If more help is needed, you can post publicly on the CC Forum. That way, others can benefit from the questions and answers too.

An English/Chinese glossary has begun here in Help:English-Chinese glossary, to help Chinese language people find things on the English language version of this site while we are working on the site's multilingual translation system. See also: 咸in English,咸translation,咸Chinese English dictionary.


What it can do for you

For collectors

As a collector, the Coin Compendium will be your ultimate resource. You are able to view your collections of coins, graded and ungraded, PCGS and NGC all in one place. You can browse other coins and build your ultimate wish list. You can view coins that are available for sale on marketplaces all around the world. You can receive automatic notices whenever one of your desired coins becomes available.

  • If you upload your coins to the CC, an expert can look at them and sort them into their correct types. This will tell you if you have a valuable variety.
  • Prevent criminals from fraudulently advertising your coins for sale. [1]

For dealers

The Coin Compendium is an amazing resource for coin dealers. Here's a brief list of how it will help you:

  1. By adding your coins as specimens, it will allow collectors, investors, and other dealers to learn of your inventory.
  2. When your coins are entered as specimens, the "watch list interest" field will tell you how many coin compendium users are interested in that type of coin.
  3. On your inventory page, you will be able to see which of your coins have the most demand.
  4. By adding a sighting of a coin you have made available for sale on eBay or other marketplace, you will automatically alert all interested watchers of the availability of the coin.
  5. When your coins are entered into the CC, it becomes very easy to find sellers that are offering coins for sale that they do not own, when they have stolen your photos.

In short, the Coin Compendium will maximize your results and minimizing your effort by letting you know what coins to sell and when.

For researchers

As a researcher, the Coin Compendium will make the exploration of coins easier than ever before. In one place you can view images of tens, hundreds, or even thousands of coins of the same type. This will enable the quicker discovery of varieties, dies, and mints. You can annotate images, highlighting exactly the portion of a coin that you find interesting and share that information with other researchers.

How it works

The Coin Compendium is made up of several basic building blocks, and each is a page on this site: Types, Specimens, Sightings, and Images - plus a few other bits that glue those parts together. The types are the stuff with a name, like

Here is a specimen with 2 sightings of an eBay list (when it was first listed, and when it sold): CC4

You can click on a recent sighting, CCS2, to see some interesting location and pricing info that was recorded for that particular specimen.


Types have a CC number that starts with CCT. They cover graded and ungraded coins, so you can enter in sightings for ungraded coins on the type pages. Types have a name that makes sense to the collectors of the type.

Types are also organized in a hierarchy. For example, CCT10: Chinese historical figures is a parent type for all coin types that are part of the Chinese historical figures series, but you can just call it a type instead of parent type if that's more convenient, since they are all types. For example, under the Chinese historical figures type is a subtype CCT18: 1989 22 g silver Chinese historical figures 4 coin set. Under that type, is another subtype for each individual coin in the set. For example, CCT25: 1989 22 g silver Chinese historical figures Kublai Khan. The part of the type hierarchy for just the Kublai Khan coin looks like this:

For the whole set of 4 coins, the type hierarchy looks like this:

Since the types for the 4 coins listed above are the most specific subtypes, those types are where specimens should go. More general types (parent types) should contain mostly just other types and sightings for the type (where the identity of the specimen isn't known).


If a coin is discovered to have varieties, the specific type can be easily treated like a general type by adding more specific types to it, and moving the specimens within the general type to the more specific type for its variety. For example, there are 2 known major varieties of the Kublai Khan coin, the big army type and the small army type. The hierarchy for those variety types would look like this:

The hierarchy for the whole 4 coin set, it would look like this:

Group, Coin, and Specimen types

A little description here: Jeru: CCT4191: 1981 1 jiao die rotation 2 is the same as 1, normal type missing.


Specimens have a CC number that starts with CC. They are individual, distinct coin specimens. Currently, only certified coins with a unique certification number are recordable in the Coin Compendium.


Sightings have a CC number that starts with CCS. They are sightings for a type or specimen that has already been entered into the Coin Compendium. Type sightings are for coins of unknown identity, and can include ungraded coins. Specimen sightings are for coins that have an identity from a grading service certification number.

The hierarchy for just one specimen sighting:

Image annotator

The old way The new way
1995 1 oz silver proof panda with white spots of death.jpg IMG 0629.JPG

The Image Annotator allows you to draw boxes on images and add notes, links, other images, and anything you can image right from your web browser, without harming the pristine original archived photo. There's no longer any need to use an image editor to alter an image to highlight details on the coin.

  • Annotation of images allows experts to share their knowledge of grading and the standards used by the grading services. This makes it possible to observe changes in grading standards, if they occur.

Local image annotation

Normal annotation appears automatically everywhere the image appears. Those annotations go on the image's file page, and can be thought of as "global" annotations. Sometimes, it might be better to keep the annotations only in one place, for a semi-private discussion about the images features. That can be done with "local" annotations, using the ImageWithNotes template. The below image with an annotation button is easily auto-generated with this code:

{{subst:ImageWithNotes | img=[[File:1369654674-3869.jpg|400px]] }}

To get this:


The image name can be changed to any image. The image size is optional. No other parameters other than image size can be used. You can use local image annotations on any page, but it is limited to only one local annotated image on each page. If there are more than one, they will not have the button for adding new annotations. In that case, you can still create the annotation code on some semi-private page, and then manually copy and paste the ImageNote code. That could be useful for creating a temporary or separate presentation of information. For more information, see ImageWithNotes documentation at Commons.


These videos were done by tamo42. He is the maintainer of the LBC coin investments lists at

How to research prices for buyers

This is a short demonstration of how to use the Coin Compendium to find fair market pricing information.

How to research prices for sellers

This video is similar to the above video, but for the perspective of sellers.

How to add specimens

In this video, tamo42 shows how to enter a PCGS certified specimen into the Coin Compendium. After entering a specimen, you MUST click on the verification link at the bottom of the specimen page to verify that the specimen was entered correctly.

How to add specimens and sightings

After entering a specimen, you MUST click on the verification link at the bottom of the specimen page to verify that the specimen was entered correctly. The video does not show that step, but it is very important to check that specimens are entered correctly. If they are not entered correctly, it could be many years before anyone notices the problem!

  1. Search for the ebay item number.
  2. If the ebay item number is not found, search for the specimen certification number.
  3. If the specimen is not found, search for the type (if not found, you might need help).
  4. Once you have found the type, enter the specimen and verify it was entered correctly using the verification link at the bottom of the specimen page.
  5. Enter a sighting for the specimen.

Here's another video: File:1334171649-3734.webm.

How to add images

How to quickly remove EXIF data from online images

Server to server file transfers are much faster than trying to upload and download files repeatedly. This section will describe how to quickly transfer images: CCFverexif → Coin Compendium.

  1. In your web browser, right click on an image or an image link to copy the image link URL or the image URL.
  2. Go to and paste the image URL into the URL field.
  3. Click "Remove Exif". Then, instead of downloading and saving the image, click "Open" to open the image.
  4. Copy the image URL.
  5. Paste the file URL into the Coin Compendium URL upload field.

How to add reference citations for online images

Reference citations are important when the images you are adding to the CC are not your own, because others will want to verify that permission has been granted for the Coin Compendium to use them. One place where you can verify that permission has been granted to use images is at the Have you ever posted your photos to this forum? topic on the CCF. If permission has not been granted yet, you can ask the owner of the image to make a publicly verifiable post at that topic to grant permission.

Here are 2 example reference citations that you can customize when uploading other people's images to the Coin Compendium, after you have verified that permission has been granted to use them:

Image from forum<ref>[ BIG ANNOUNCEMENT: China To Issue 1st Panda Show Medal in over 15 Years]</ref>, permission granted by [[User:Lightsview]].<ref>[ Have you ever posted your photos to this forum?]</ref>
Image from NAME_OF_WEBSITE_SOURCE_GOES_HERE<ref>[IMAGE_SOURCE_URL_GOES_HERE FORUM_POST_TITLE_GOES_HERE]</ref>, permission granted by [[User:USERNAME_GOES_HERE]].<ref>[TITLE_LINK_URL_TO_PERMISSION_POST_GOES_HERE Have you ever posted your photos to this forum?]</ref>

That sample code uses MediaWiki external link syntax. All you need to do is change the URL in the first part, and then the second part is the link text that will be shown, separated by a space. If you need help, as always, just ask in any of the coin forums, chat, etc.

Making links

There's a simple way to talk about any coin in the Coin Compendium without a lot of typing. Typing only this short bit with the CC number CCT638:

{{CC | CCT638 }}

Produces this automatically:

CCT638: 1987 22 g silver Chinese historical figures Chen Wen vanishing elbow and frosting variation

The technology that produces that link will automatically update the link if the type name changes. So, you can write information about an active area of research without needing to update the type names when new information is discovered, and the types are reorganized and renamed.

Linking to Wikipedia articles

You can link to Wikipedia articles containing information relevant to a coin like this:


To get this:

You can use the pipe trick to make it so the w doesn't appear in the link, like this:


Which will automatically produce this code:


To give you this without the w:

You can also use anchors to link to specific sections in Wikipedia articles, but be aware those sections could be changed or delete at any time, rendering the anchor in the link useless. Link to the "History" section Wikipedia's China article like this:


To get this:

Anchor links are ugly and confusing, so instead of the pipe trick, use some other text for the link, like this:

[[w:China#History|History of China]]

To get this:

Quick start guide for entering data

  1. Request an account from badon to get on the CC.
  2. Search for the type of coin you want to enter, using the top right box with search button. You can also enter in a CCT number for a type to go directly to a type page. Use the fewest keywords to find your coin. For example, enter "1993 silver panda" instead of "1993 one ounce silver proof panda", to find CCT201: 1993 1 oz silver panda proof.
    1. If searching does not find the CCT numbered type page you need, try browsing for it using the type navigation tree on the main page.
    2. If you still cannot find the type page you're looking for, you may try browsing all types in the types category
    3. Finally, if the type is not listed then you can create it. Browse to the type it should go under, and click "Add a new subtype of this type" under the "Tools" box
  3. When you are on the correct CCT numbered type page, then click "Add a new specimen of this type". This takes you to the "Specimen find" form.
  4. Enter the NGC or PCGS certification number of the coin specimen you want to add in the box and click "search". This will take you to a similar page so scroll down and your (grading) certification number should be in red letters.
  5. If it says "found", then the specimen has already been entered, and you can proceed to enter in a sighting for the coin. You may also click the specimen CC number to check for previously entered sightings. If it says "not found" then click "Add this specimen".
  6. The "Create specimen" form has 3 main important fields. Click or fill in the field for "Grade" (69, 70, etc), then the "Designation" (Ultra Cameo, Deep Cameo), and "Certified by" (NGC or PCGS). Then, click "Save page" at the bottom of the form. Your specimen has been added!
  7. You will now see the CC page where your coin and all information about it will be stored. The "Notes and References" section at the bottom will link you to the NGC or PCGS website to verify that the certification number was entered correctly. The certification number is the most critical piece of information, and must always been 100% accurate.
  8. You can add photos of your coin by clicking "Add an image for this specimen" in the "Tools" box near the top of the page. Follow the instructions on the "Image" form.
  9. You can also add a sighting for your coin to store pricing information, if there are verifiable records that it was bought or sold.

If you have any problems or questions you can contact pandamonium, SANDAC or badon for help. Let's get the CC rolling.....

Obverse and reverse side of coins

The numismatic definition of obverse is the side with the smallest scale (close up details). So, if there is a person's head on one side, and building on the other side, the person's head is a smaller scale, so that's the obverse. That definition is literally thousands of years old, dating back to the first coins. It also makes a lot of sense to show the "most interesting" thing in a smaller scale, and call it the "front" or "obverse". So, we completely disregard any other definition.

However, there are exceptions to that rule. They are rare, but they do pop up from time to time. For example, CCT1151: 1988 5 oz silver panda lunar dragon Hong Kong expo has the smallest scale on the reverse, with only the dragon's head up close and detailed. The obverse of that coin shows a larger scale of the whole dragon and 5 dancing pandas. The reason why the definition ends up being a little different for that coin is because the dancing panda side is the "most interesting". Even though the scale is larger for the obverse, it fill the entire side of the coin, and not just a small circle in the middle. That makes it clear which side is the "most important".

The older coins do not use different rules, but CCT2546: 1902-05 10 cash copper Hupeh dragon is an exception too, because the dragon side is the "most interesting", and fills the whole side of the coin. The Chinese characters on the reverse don't have a scale (writing can be big or small), and there's no single aspect of the reverse that fills the whole side of the coin.

Type naming conventions

The general rule about precedence of the information in a type name: date weight metal series

The fiat value should be left out of the type name unless it is critical for distinguishing the type. For example, circulating coins are all defined by their fiat value (1 yuan, 5 jiao, etc). For non-circulating coins, in most cases the fiat value is arbitrary and literally has no meaning. If there were coins with the same or similar metal, design, etc, but different fiat values, then it would be critical to add the fiat value to the type name to prevent confusion. In that case, the fiat value would probably need to go at the end of the type name, not after the date. They should have the metal in their type names after the date, if the metal is important for distinguishing the type. Examples:

How to add set types

  1. Find the parent type that the set should go under, like CCT30: Panda or CCT829: 1987 1 oz gold panda S, for example.
  2. On the parent type page, click "Add a subtype of this type".
  3. Give the new type a name (like CCT18: 1989 22 g silver Chinese historical figures 4 coin set), and fill out other form information if needed, and then save the page.
  4. On the new type page, click "Add a subtype of this type" to add a type for the first coin in the set, like CCT25: 1989 22 g silver Chinese historical figures Kublai Khan.
  5. On the new coin page, click "Add a type like this " to add a type for the next coin in the set. Repeat this step until all coins are added.

How to add set sightings

For set sightings, the only things that are different is that the form cannot preload all specimen CC numbers for you. You will need to copy and paste them into the Specimen field of sighting form. In addition, if there is a set type, you will need to ensure the CCT number is entered into the Type field of the sighting form. You can view the form for CCS92: 1988 gold panda 5 coin set proof, 1988 1/20 oz gold panda proof, 1988 1/10 oz gold panda proof, 1988 1/4 oz gold panda proof, 1988 1/2 oz gold panda proof, 1988 1 oz gold panda proof to see an example of how that set was entered.

  1. Open the set type in a browser tab, if it exists.
  2. Open each coin type in a browser tab.
  3. On each coin type page, click Add a specimen of this type to create specimens for the sighting. Leave the pages open, you will need the CC specimen number after the specimens are created.
  4. If there is a set type, then on the set type page from step 1, click Add a sighting for this type. That link will preload the form with the CCT number for the set type in the Type field of the sighting form. If there is no set type, then click Add a sighting for this specimen on one of the specimen pages. That link will preload the form with CC number for the specimen in the Specimen field of the sighting form.
  5. In the Specimen field, enter in each specimen's CC number, separated by commas (like this: CC123, CC456, CC789).
  6. Fill out the sighting form in the usual way, and click Save page.

Note that you do NOT add separate sightings for each coin in a group that will be sold together. 1 eBay listing = 1 sighting.

How to get blocked certification numbers from the barcode

  1. Use your browser's zoom feature to zoom in on a coin's barcode until the barcode fills your screen. Usually this is done by holding down the CTRL button on your keyboard, while scrolling up with your mouse scroll wheel. You can also use your browser's menus to set the zoom level. Zooming on the barcode will make the barcode larger and easier for the barcode reader to decode.
  2. You may need to right click on the image and select Open image in Opera or Open image in new tab in Google Chrome if the website makes it difficult to zoom in on the barcode.
  3. Use the Capture Rectangular Region button to select a portion of your screen to be screenshotted with FastStone Capture.
    The region option is the best one to use for screenshotting barcodes with PicPick. (Use the Download Installation Package link to download it).
  4. You should get a clean barcode image that looks like this:
  5. Upload the image to the online barcode reader. Hover your mouse over the image below to see the annotations that explain how to interpret the barcode to get the certification number.
  6. If the barcode can't be read, try increasing or decreasing the brightness and contrast of the barcode image with pixlr. You may also need to paint over areas that are covered with dust.
    Screenshot showing how to adjust the brightness and contrast at pixlr.
    Before: This barcode is unreadable because of dust covering parts of it, and because it is too dark, with not enough contrast.
    After: This barcode was made readable by painting over white dust areas, and increasing the brightness and contrast.
  7. If you need to rotate the image, click "Edit", then "Free transform".
    "Free transform" can be used to rotate or change the shape of the barcode image. This is helpful if the photograph was made at an angle.
    "Free transform" can be used to rotate the barcode image.
  8. "Free distort" is under "Free transform", and it can be used to straighten the image if the photograph was made at a skewed angle.
    "Free distort" can be used to straighten a distorted image.
  9. After you succeed in reading the barcode, add the full barcode numbers to the specimen.
  10. Add the barcode image to the sighting you got it from, so the barcode can be verified.

Sighting currency conversions

Sighting currency conversions are handled differently depending on whether the sighting is ongoing, has ended recently, or has ended a long time ago.

Sightings ongoing or recently ended


292.54 is the price that should be entered, and USD should be the currency entered.

Sightings ended a long time ago


The Yahoo currency converter produces 472.39 USD on the sighting date of April 12, 2012 UTC. 472.39 USD is a more accurate currency conversion on the sighting date than 459.83 USD on the date of this screenshot.

But, there can be wide variation in currency conversion rates even within a single minute or hour, so different currency conversions will produce slightly different numbers. Then, the decision must be made about which number to enter for the sighting.

There is already a price of 471.64 USD that was entered on the page creation date of 2012 April 13 UTC for the sighting CCS4663. Because:

  • The ended sighting's 471.64 USD price was entered close in time to the actual ending date.
  • The 471.64 USD price is close to the Yahoo currency converter's 472.39 USD price for the sighting date.

We can assume the price was probably taken from eBay's currency conversion, and is as accurate as can reasonably be expected. The actual currency conversion that will be used won't be determined until the buyer pays for the item, which could be 1 week later, sometimes more.

Routine tasks

Read and respond to CC forum posts each day

  • New posts in the CC Forum should be read each day. You should respond to posts when you are able to answer a questions or help in some way.
  • Error confirmations and new type confirmations are the highest priority.

Review errors each day before beginning a task

  • The CC Forum is where we can keep track of errors found. The Coin Compendium:Errors page is no longer used.
  • Everyone should review their errors before entering new data each day.

Verify non-task contributions in recent changes

  • Recent changes shows recent edits. Check it for edits made by people who are not working on routine tasks, and verify their contributions.
  • Special:ActiveUsers shows everyone who has made edits recently. There are convenient links to their contributions. You can also check anyone's contributions at Special:Contributions.

Fix "lost" files

Special:UncategorizedFiles contains images that were uploaded without having image form data saved for them. Some of them are OK to leave there, because they are for testing or some other purpose that does not require image form data. Others are screenshots or coin photos that need to be categorized under CC numbers. following To fix those images, follow these steps:

  1. Determine what CC numbers the image belongs to. If you don't know, it is better to stop here and leave the image uncategorized until that information is found. DO NOT PROCEED TO THE NEXT STEPS.
  2. Click on the image to go to the image's file page.
  3. Click the "Edit" tab at the top of the page.
  4. Enter {{Image}} and save the page.
  5. Click the "Edit with form" tab at the top of the page.
  6. Scroll down to the bottom of the form, and enter {{subst:Template:Core form preload }} in the large free text area, and save the page.
  7. Click the "Edit with form" tab at the top of the page.
  8. Enter form data like normal.

That's it! When an image gets "lost" the 2 bits of code above will restore the form features, and then the image form can accept the data required to categorize the image under CC numbers.

Search ongoing sightings for ended eBay listings, and enter ended sightings for them with screenshots for sold listings

This is the easiest task because no experience with types and specimens is required, and sighting data is preloaded into forms. The only new information to enter is the ending sighting type, the ending price, the buying format, and the ending sighting date (converted to UTC time).

  1. Oldest ongoing eBay sighting list.
  2. Newest ongoing eBay sighting list.
  • Ending sighting forms are preloaded with data from the ongoing sighting, to reduce effort. If the ongoing sighting has incorrect data, the ending sighting will have incorrect data too. You are responsible to make sure nothing is incorrect.
  • The buying format should remain the same as the ongoing sighting if the only formats are purchase and/or best offer, because there is no reliable way to verify whether the listing sold at the purchase price, or at some best offer price. The auction buying format is very clear, if the listing sold in an auction.
  • If the ended sighting is for a listing that sold, screenshot it to record the sale permanently for later verification and study.

The following video shows how to add ended sightings. There are a few things in the video that need to be clarified:

  1. No CCT type number needs to be entered.
  2. The phrase "active sighting" has the same meaning as "ongoing sighting", but ongoing sighting is the correct terminology to use on the Coin Compendium.
  3. When looking at an ended eBay listing, click See original listing to view auction, purchase (buy it now), and best offer pricing. If there is more than one price, such as an auction price and a purchase price, or a purchase price and a best offer price, the lowest price is always the one you should enter in. As of October 2012, ebay photos are showing "SOLD" banners across the bottom corner when they should show "ENDED" - that is a bug is eBay, and it only occurs if you forget to click See original listing. Badon 03:16, 21 October 2012 (UTC)

Summary of how to remove ended sightings from this list in 8 simple steps:

  1. Click the sighting title link to view the sighting venue.
  2. Click the sighting CCS number to view the sighting page.
  3. Compare the sighting venue and the sighting page to verify that the sighting page's information was correct at the time of the sighting.
  4. On the sighting page, click Add a sighting like this. You will see a new sighting form with identical information preloaded for you.
  5. Update any information at the sighting venue that is now different from the original sighting page.
    • Follow the instructions to enter the ending date in UTC time. This is very important to enter correctly.
    • The ending price might be different, especially if the sighting was an auction or a best offer.
  6. Change the Sighting type from an ongoing sighting type, to an ended sighting type.
  7. Save the form, and wait for the Coin Compendium sighting system to update. Usually it will update within 1 minute or less, but it could take up to 2 hours.
  8. Reload the sighting list to verify the ended sighting has been dropped from the list.

Thank you for helping to keep the sightings updated!

UPDATE: It might be a good idea to copy ebay item listing text to the screenshot image file page, as described in Re: Canadian imitations of the Chinese gods coins. That will make the text of the screenshot searchable, which can be helpful for verifying information. Badon 04:17, 25 September 2014 (UTC)

Verify ended sighting info with eBay search results

UPDATE 2012 July: eBay is showing bids for things that were actually purchased with Buy-It-Now. You have to click on the bid history to see how it sold. You can take a look at this sighting for an example: CCS14314: 1984 22 g silver goldfish 4 coin set, 1990 20 g silver goldfish 4 coin set

To be certain of the ending buying format (auction, purchase, and/or best offer), you can verify it in an eBay search results page. There are a few things that can't be verified. In those cases, just leave both buying formats like they were in the ongoing sightings:

  • All other formats disappear from the eBay listing page AND from the eBay search results, after bids are placed on a listing that has an auction format in addition to other formats.
  • It isn't possible to reliably verify whether a coin sold as a purchase or best offer.

To verify the buying format you need to find a specific listing in an eBay search results page:

  1. Click Seller's other items.
  2. Click Completed listings to see ended eBay listings.
  3. If eBay item numbers aren't shown in search results, click Customize view.
  4. Check the Item number box to show eBay item numbers in the search results.
  5. Use ctrl+f in your web browser to find the eBay item number in the page, and quickly locate the listing you're looking for. Once found, you can easily see and verify the buying format, sighting date, sighting price, etc.
  6. If the listing does not show up, try drilling down through the categories until you get to the specific category that the eBay listing is in.
  7. If there are multiple pages, adding a word to search for can reduce the number of search results.
  8. If the listing still cannot be found, it is probably too old to show up on eBay search results. In that case, a sighting can be compared to other sightings for the specimen, or in the sighting's sighting confirmations. The sighting data should be assumed to have not changed from the other sighting data.

Enter new sightings for old ongoing sightings

If an ongoing sighting is old (about 100 days), the sighting system will automatically treat it like it is an ended sighting. For example, eBay widgets will stop displaying. If the sighting is still ongoing, then enter a new sighting to make the system recognize that the sighting has not ended.

Enter specimens and sightings for ongoing eBay listings

For all tasks here:

  1. Generally, it is not necessary to enter huge numbers of common coins each day. Instead, enter only a sample of them, and focus your efforts on less common coins. Discuss in the CC forum post, Focus effort on rare coins and skip all but a sample of common coins.
  2. Search the CC for the eBay item number to find out if it has already been entered, and skip it if it has.
  3. Click the "Save page" button ONLY 1 time on forms to prevent duplicates.

Newly listed

  1. Newly listed NGC and PCGS certified Chinese coins (all dates).
  2. Newly listed NGC and PCGS certified non-panda Chinese coins (all dates).
  3. Newly listed NGC and PCGS certified panda Chinese coins (all dates).
  4. Newly listed NGC and PCGS certified Chinese coins 2003 and older.
  5. Newly listed NGC and PCGS certified Chinese non-panda coins 2003 and older.
  6. Newly listed NGC and PCGS certified Chinese panda coins 2003 and older.
  7. Newly listed NGC and PCGS certified Chinese coins 2004 and newer.
  8. Newly listed NGC and PCGS certified Chinese non-panda coins 2004 and newer.
  9. Newly listed NGC and PCGS certified Chinese panda coins 2004 and newer.
  10. ebay Germany newly listed NGC and PCGS certified Chinese coins (all dates).
  11. ebay Germany newly listed NGC and PCGS certified non-panda Chinese coins (all dates).
  12. ebay Germany newly listed NGC and PCGS certified panda Chinese coins (all dates).
  13. ebay Germany newly listed NGC and PCGS certified Chinese coins 2003 and older
  14. ebay Germany newly listed NGC and PCGS certified Chinese non-panda coins 2003 and older
  15. ebay Germany newly listed NGC and PCGS certified Chinese panda coins 2003 and older
  16. ebay Germany newly listed NGC and PCGS certified Chinese coins 2004 and newer
  17. ebay Germany newly listed NGC and PCGS certified Chinese non-panda coins 2004 and newer
  18. ebay Germany newly listed NGC and PCGS certified Chinese panda coins 2004 and newer

The highest priority are the newest eBay listings. Periodically check for new listing, and enter those immediately. To save time and effort, you can use Feed Notifier to check for new listings automatically. Once installed, set it up as follows:

  1. On a search page, right click on eBay's orange RSS button to copy the RSS URL. Or, just click on it, and copy the URL from your web browser's URL toolbar field.
  2. Click the "Add" button to add a new feed. Give it a title that will make it easy for you to know what it is, and then enter in the RSS feed URL. Set the polling interval to 1 minute so you will be quickly notified when something new gets listed.
  3. Watch for the notification popups in the corner of your screen.

Ending soonest

  1. Ending soonest NGC and PCGS certified Chinese coins.
  2. Ending soonest NGC and PCGS certified non-panda Chinese coins.
  3. Ending soonest NGC and PCGS certified panda Chinese coins.
  4. Ending soonest NGC and PCGS certified Chinese coins 2003 and older.
  5. Ending soonest listed NGC and PCGS certified Chinese non-panda coins 2003 and older.
  6. Ending soonest listed NGC and PCGS certified Chinese panda coins 2003 and older.

How to quickly find eBay listings that are not in the CC yet

  1. Go to an eBay listings search.
  2. If eBay item numbers aren't shown in search results, click Customize view.
  3. Check the Item number box to show eBay item numbers in the search results.
  4. Copy each eBay item number into the CC's search box to see if the eBay listing has already been entered.

Search ended eBay listings for listings that are not in the CC yet

For Chinese coins dated 2004 and later, only check them and enter them if they have sold for more than $200. Ignore unsold coins, and coins that sold for less than $200. Pandas are easier, since they are well-organized, and it is easy to search for their types.

How to quickly find eBay listings that are not in the CC yet

  1. Go to an eBay listings search.
  2. If eBay item numbers aren't shown in search results, click Customize view.
  3. Check the Item number box to show eBay item numbers in the search results.
  4. Copy each eBay item number into the CC's search box to see if the eBay listing has already been entered.

Verify correctness of all data entered by one person

Special:Contributions is the page to use to find all contributions of one person. The information below is helpful for this task.

Verify correctness of all new sightings and their specimens

  • List of new sightings.
  • Do not edit a sighting that was entered correctly at the time it was entered. Compare the page creation date to the sighting date. The sighting date can never be AFTER the page creation date.
  • Use the verification link on specimen pages to verify the certification number is correct.
  • Be sure to compare sighting confirmations on sighting pages, and the sightings on specimen pages. It will help find errors and verify correctness of other sightings. This will also help to verify information that was entered correctly at the time of the sighting, but was later changed by the seller.
  • In eBay listings ended unknown by the seller, sometimes the seller also cancels all bids to reset the auction price to the starting price, before ending the listing. So, previous ongoing sightings may appear to have an incorrect auction price, when actually, the price was correct at the time of the sighting. CCS5028: 2008 1/2 oz gold panda is an example of that. Note that price changes caused by canceled bids will not show up as listing revisions.
  • When verifying prices entered for ongoing auction format sightings, be sure to click Show automatic bids in the bid history to see all the historical bid prices before you try to verify the price was entered correctly.
  • Normally, duplicate sightings are OK, but not encouraged. For the Sale ongoing sold sighting type, duplicate sightings are not OK if nothing was sold on the sighting date.
  • eBay's revising restrictions can help determine when sighting data was entered incorrectly, versus when it was changed by the seller. Here are 2 examples: [2] [3].
    1. Click View all revisions to see if possible sighting errors are actually changes made to the listing by the seller.
    2. Use the timezone converter to easily determine if changes were made after the sighting was entered.
    3. If changes were made to listing features after the sighting was entered, then the sighting is probably correct if all the differences between the sighting and the listing are changes allowed by eBay's revising restrictions. If the differences are not in the list of allowed changes, and/or they don't show up on the listing's revisions, then the original sighting was probably entered incorrectly.
  • When an error is found, have someone else in the chat confirm it for you before you fix it. If no one is available, record the error and fix it immediately if it is simple, or fix it later if it is complex. Always record who confirmed the error for you.
  • When an error is found, put it in the Coin Compendium:Errors page.

Confirm fixes for errors

Confirmations are not confirmation for errors. They are confirmations for the FIXES for errors. If there is no error, then there is no need to confirm a fix. Most improvements that don't change any data are not fixes, and do not require confirmation.

  1. Find out EXACTLY what should be confirmed.
  2. When asking for confirmation, explain what the error is, and what the proposed fix should be.
    • Do not confirm a fix until you are sure the proposed fix is correct.
    • If needed, ask for the references used to prove there is an error.
    • If needed, ask for the references used to prove what the fix should be.
  3. Errors normally should not be fixed until they are confirmed, unless there is no one available to confirm. Then, the fix can be confirmed after the fix is done.
  4. The person that confirmed the error should check it after it is fixed to be certain it is correct, and then sign it.
  5. When all form fields have been verified and signed, then sign the last "Page verified by" field to indicate that everything has been verified and is 100% correct.

Confirm new types

To prevent the creation of duplicate types, new types require confirmation from another person to ensure that they truly do not exist yet. The easiest way to get confirmation is to post in the CC Forum. When adding types, please also add mintages, if available. Please also add alternative names if it is likely that people will search for the type using a variety of different common names. A good example of what alternative names should look like is in CCT3748: 1987 12 oz silver 125th anniversary birthday of Zhan Tian You. The alternative names for that coin are more diverse than is normal for most coins. Many coins do not need alternative names if they are easy to find by searching.

Type cultivation

  1. Record information for identification of CC types.
    1. Add new types.
    2. Add images.
      • May need to add sightings and specimens first, to fill out the data hierarchy (data structure) for the images.
      • Data hierarchy 1: Image → Sighting → Specimen → Type
      • Data hierarchy 2: Image → Specimen → Type
      • Data hierarchy 3: Image → Type
      • Always use the most detailed data hierarchy possible.
      • Data hierarchy 1 is the most detailed and informative, if it is possible to enter data with that structure.
    3. Add variety types.
      1. Sort specimens into types and variety types.
    4. Write article information describing how to distinguish types and/or varieties, if needed.
      1. Include images, if needed.
      2. Include image annotations, if needed.
    5. Enter sightings and specimens if needed to document the existence of the type.
      1. If a type is rare or not well-known.
      2. If a type is not authenticated by NGC or PCGS yet.
      3. If there is controversy about whether the type is a product of one of the official China mints, or not.
      4. If there is controversy about authenticity or fakes.
  2. Record useful supplementary facts about the types.
    1. Mintages.
      1. If there is more than one mintage figure, choose the "best" one of them to enter into the type form.
      2. If there is more than one mintage figure, record and describe all of them in the article area.
      3. Quote sources for the mintage information, and add verifiable citations for the sources.
    2. Alternative names list.
      • List must contain all alternative names, including the one currently in use for the type.
    3. Mint that produced the type.
    4. Artists that designed the type.
    5. Distributors.
      • MDM in Germany.
      • PandaAmerica in the USA.
    6. Issuers.
      • People's Bank of China for fiat in most cases.
      • China Gold Coin Incorporation (CGCI).
      • China Mint Company (CMC).
      • Shanghai Shenquan Industry and Trade Co., Ltd.
    7. List of forum discussions.
    8. Text on the coin, including translated versions, if available.
      • Many people begin their search for info about a coin by entering the text on the coin into search engines.
  3. Write article information that describes interesting details.
    1. Numismatic context.
      1. Relationship to other coins, if any.
        • A "See also" section with other CC type links and a brief description is fast to enter, if there are other coins that have some connection.
    2. Wider historical context.
      • The news and events from the time period.


Maintain the CC forum event calendar. Event information is available from the event venue or the event organizer. Most events are not specific to a narrow group of coins, so they should be posted in the CC forum's [url=]General Events[/url] area.

Event information list

A list of events, venues, and event organizers can kept here, so they can be regularly checked for new events to add to the CC forum calendar:

Also, other lists of events can be checked too.


Policy precedents

The Coin Compendium should follow the policies of Wikipedia, Wikimedia Commons, and the Wikimedia Foundation (WMF) when dealing with non-free content.

Cite policy used

In this example, a COA specimen is recorded from non-free images of it. Maximum resolution is required to distinguish it from others like it, to authenticate it apart from forgeries that may appear in the future:

[ Non-free content, acceptable use]: COA specimen identification requires full resolution.

Which will appear on the site like this:

Non-free content, acceptable use: COA specimen identification requires full resolution.


Helpful tools Platform

The Platform makes it easy to move to another computer without needing to reinstall and re-setup all of your favorite software. You don't need to download each bit of software separately. Instead, the platform will download it for you, and it will update it for you too! Refer to the list of all available PortableApps, but don't download them directly. Instead download them within the PortableApps platform. A few things that might be helpful:

Liberkey portable applications platform

Liberkey is like PortableApps, and it is even designed to be compatible with everything in PortableApps. It has most of the same software too, but it has a few things PortableApps doesn't have.

Other portable software

Firefox add-ons and extensions

  • DisableBackspaceNavigation - Backspace is for deleting text. Many foolish software developers think backspace should also do navigation too, by taking you "back" one page. Instead of being helpful, that usually causes the loss of whatever text you were editing in your web browser, like in forms used on nearly every website in the world, including this one. This should be the first thing you install in Firefox.
  • CoLT makes it easy to post links to forums and to the CC by giving you a right-click menu that will automatically copy the link as a "Wikipedia" or forum BBCode, so you can quickly paste it anywhere it is needed.
  • Add to Search Bar lets you add the Coin Compendium search to your web browser. Not only do you get a convenient search field in your web browser, but you can also highlight ebay item numbers and CC type, specimen, and sighting numbers, and then right click them for instant search! It makes finding things in the CC very fast.
  • Session Manager is the ultimate session manager. If you configure Firefox to not load tabs until you click on them, you can have HUNDREDS of tabs open at the same time. If you start going crazy with THOUSANDS of tabs open at the same time, you can save them as separate sessions in different windows. That is a little tricky, because you have to avoid overwriting your sessions when you save them, but once you master sessions, you will become a web research god.
  • Tree Style Tab is the ultimate way to organize busy research and data entry in many different tabs. Badon likes to set it up with the tabs on the right or left side, and with the new tabs appearing at the top instead of at the bottom.
    • Tab Tree is a new add-on that is already better than Tree Style Tab in many ways, even though it isn't as mature yet. Try using this one first, it's probably good enough for you.
  • Lazarus: Form Recovery is essential if you're pushing Firefox to its limits. Sometimes you have to restart it because it's slowing down with hundreds of tabs in use simultaneously (that unloads the ones you're not using). Sometimes Firefox will crash. In both cases, Lazarus will automatically save your work. You can fix the backspace-as-back-button problem in about:config to eliminate 99% of the lost forum posts and other lost work, so search for how to do that too.
  • Tab Mix Plus adds many helpful features to Firefox tabs.
  • Screenshoter(Fixed) makes it super-easy to create whole page screenshots of any web site for documentation purposes on the CC, or for discussion on forums.
  • FireShot also has the ability to take whole page screenshots. It has the scrolling of page effect while doing the screenshot.
  • Lightshot is one of Vsheilley's favorite tools because it makes it easy to upload screenshot files online, for Firefox, Windows, and Mac.
  • Quick Translator is the easiest, fastest way to translate text on web pages. It can translate the whole page if you want, but its true power lies in its ability to quickly translate small bits of highlighted text INSTANTLY! There's nothing faster, simpler, or easier to use. It stays out of your way until you want it, and it's always there when you need it. Just highlight some text, and a faint, almost transparent button will popup next to the highlighted text. You can ignore it if you don't need a translation, or just click it to instantly see the translated version. It's the best translation tool for casual use, and it's still super convenient and handy to use alongside other translation tools you might have.
  • S3.Google Translator is more sophisticated and powerful, but its still almost as quick and easy as Quick Translator.
  • FloatNotes are little yellow notes you can put anywhere on web pages to remind you why you have the page open in one of of your hundreds or thousands of tabs. Plus, if you're a polymath workaholic renaissance man like badon is, and you eventually die in the middle of working on something important, scholars can spend the next centuries and millenniums arguing over the deeper meaning of nonsense notes that surely played a role in the expounding exegesis of the exogenesis of genius...and other such babble. Hmm, that sounds like something badon should actually write someday, but with less x's, g's, and s's...
  • TabSubmit is most useful for opening CC or forum searches in new tabs. The more the merrier, especially if you get happy or funny the more work you do and the less sleep you get, or at least think you do, like badon does. No, he won't still respect this text in the morning, so it will probably disappear in ancient revision history. Yet another little Easter Egg for the scholars. Can you believe people make their careers out of exploring rabbit holes like this one? Why so serious? There's a job for everyone - except for the self-employed. Then, there's a job for everyone, and they're all you.
  • HTTPS Everywhere | Electronic Frontier Foundation
  • https-finder - A Firefox extension that detects valid HTTPS pages as you browse. One-click rule creation for HTTPS Everywhere - Google Project Hosting
  • Perspectives :: Add-ons for Firefox
  • Web of Trust - WOT :: Add-ons for Firefox
  • Thumbnail Zoom Plus makes it quick and easy to see enlarged and full resolution versions of images, for easier examination. It also makes it easier to save full resolution images from sites like ebay, that make it difficult to do.
  • Mozilla Archive Format, with MHT and Faithful Save :: Add-ons for Firefox - Better than a screenshot, or good supplement for a screenshot.

Google Chrome extensions

File sharing, backup, and data integrity

  • Tiikoni Temporary Image Storage.
  • temporary file hosting - Google Search
  • BitTorrent Sync - Share with 1 person, or 1 million people, it's all super easy. Just be sure to share only the "read only secret". It also works great for backups to another computer, or many computers.
  • Corz checksum is the fastest tool to verify your files haven't been lost or corrupted. If it finds an error, then you can use something more sophisticated to repair the problems.
  • MultiPar can verify your files like Corz checksum, but it's slower. However, unlike Corz checkksum, if MultiPar finds a problem, it can repair corruption and regenerate lost files!

Tally counter

A tally counter is useful for counting how much info you are handling on the CC. There are mechanical versions sold at, but a software tally counter might be more convenient and cheaper (free). A preconfigured copy of VersaCount is available in the CC Forum post, Counting data entry totals with a tally counter.

World clocks

An international team requires an international time reference.


Personal tools
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