FAQ

Coins and Collecting

I have x coin, will you buy it?

What is my coin worth?

Searching Coincat

What do the icons mean?

What do the different colours mean?

What do the letters BV mean?

What does membership cost?

Can I change the valuation currency?

Where do the values come from, and why do only some coins have values?

The image of a coin shows a year for which the coin was not minted. Why is this?

How can I add the image of a coin?

Why is my coin not in the database?

Can I add information to the database?

Some of the information about a coin is incorrect

Which catalogs do the codes in Coincat refer to?

What wildcards can be used when searching?

What is NCLT?

How are Euros listed?

How many types and years are in the database?

My collection

How do I back up my collection?

How do I import my collection?

I have a proof coin, how do I show this?

How do I show the mintmark of my coins?

Trading coins

I have had an unsuccessful trade/sale with a member, what can you do about it?

How do I send someone my trade list?

General

What calendars does Coincat support?

Are there any plans to add multiple language support to Coincat?

I have a coin from a country which is not in the database, how do I add it?

I have found a bug in Coincat

Can I show the weights and sizes in imperial units?

Coins and Collecting

I have x coin, will you buy it?

Coincat is not a coin dealer. We do not buy or sell coins. Members can list their coins for sale, and may be able to sell them that way.

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What is my coin worth?

I don't know.

The major factor determining the price of a coin is the condition. A coin in the same condition as it left the mint may be worth hundreds of times one which just looks quite good. Without seeing the coin, value judgements are nearly worthless. Age alone has almost no impact on the price. Roman coins about 1800 years old can be bought for under $100, even in quite nice condition. Some coins issued last year are worth more, even if not gold or silver.

Coincat may however provide you with some assistance:

If a coin is gold or silver, the value will not be less than the value of the metal, which Coincat lists and updates. It may be worth more.

Many coins have values listed, check to see if your coin has a value listed.

Coin dealers need to make money to survive. They will offer to buy a coin from you for less than they think they can sell it for, therefore, whether you are attempting to buy or sell a coin will impact the 'value'.

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Searching Coincat

What do the icons mean?

Your collection You have this coin in your collection - click for details

Add to your collection Add this coin to your collection

Your sale listing You have this coin listed as for sale - click for details

Sale listings A user has this coin listed as for sale - click for details

Your trade listings You have this coin listed as avaliable to trade - click for details

Trade listings A user has this coin listed as avaliable to trade - click for details

Your wanted listings You have this coin listed on your want list - click for details

Wanted listings A user has listed this coin on their want list - click for details

Add to shopping cart Add this coin to your shopping cart

In your cart This coin is in your shopping cart, click to remove it

Show members listing Show all of the coins this member has listed for sale, trade or wanted (as appropriate)

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What do the different colours mean?

Red: A subscriber feels that there is an error in the data. Click on the error icon to view who added the error comment and what it is. Then, like someone able to make your own decisions, decide on the validity of the comment.

Grey border to an image: This image is not exactly the same as the coin in question. We have added it as we have decided that it is better to have a picture of the coin which is close to what it looks like rather than none at all. Make your own decisions on whether this is the best decision.

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What do the letters BV mean?

BV stands for bullion value. For gold, silver and platinum coins, this is the approximate value of the precious metal it contains. If the gold price is at USD600 per ounce, and a one ounce coin is 0.75 pure, then the value will be USD450. Please remember that the values listed are rounded, and are therefore only approximate, metal prices and exchange rates change constantly.

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Can I change the valuation currency?

Not a problem, members can change this in the "profile" section at any time. Membership is free, join and see.

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What does membership cost?

Membership is free, join and help add to the catalog. If you want, we welcome donations to help cover our costs.

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Where do the values come from, and why do only some coins have values?

The values listed are calculated, without any editorial input or review. They are likely to be different from those listed in any given catalog, and may be different when you look again tomorrow. In general, there are two types of value listed - the value for an average coin of the type, and for listed grades. An average coin is just that, a coin of average condition for the type. This may be Unc for a recent coin, or good for one which is several hundred years old.

We are working to improve the values, but as with any catalog, you should take them as an indication only. If you need a more comprehensive range of values and are happy that they will be missing the latest coins, we suggest looking for a paper coin catalog at your local library, or buying one on Amazon

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The image of a coin shows a year for which the coin was not minted.

In order to maximise the number of coins we can display images for, if all other features of the design, other than the year remain the same, rather than increasing the size of our database, or having no image at all for the type, we have shown the otherwise identical image for another year. The images are shown to aid identification, they are not the holy grail.

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How can I add the image of a coin?

You can't. At least not yet. Sorry. We are working on an effective way to add this functionality.

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Why is my coin not in the database?

There are thousands of different coin types, and many more combinations of years, mintmarks and striking types. Alas, we have not had time to add them all to the database. Feel free to add your coin to the database & increase its value to all users. The database will grow to include more types.

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Can I add information to the database?

If you are a member, please do, it will make Coincat more valuable to all. If you are not a member, please join, then you will be able to make this valuable contribution to the database. Simply click on the "add type" or "add year" links on the coin detail page.

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Some of the information about a coin is incorrect.

Sorry. Please use the error icon to make a note of this inaccuracy so all members can see it. We attempt to check all data which has been flagged as being in error and correct it. The only way we can do this is if our users highlight it for us. Please note that for many coins (especially older ones) the size will vary, and for all coins, there may be variations in the description of the material they are made from eg., copper or bronze.

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Which catalogs do the codes in Coincat refer to?

:
BCU: Banco Central del Uruguay: Museo Numismático
C: Craig, Coins of the World
CBR: Central Bank of Russian Federation
CC: Coincat
CE: Casey Esposito's World Coin Collection
ICMC: Israel Coins and Medals Corp
INCM: Imprensa Nacional Casa da Moeda
J: Jaeger
KM: Krause, Standard Catalog of World Coins
KM Old: Krause, previous codes
None: None
RAM: Royal Australian Mint
RCM: Royal Canadian Mint
S: Seaby, Standard Catalogue of British Coins
SA: Marcos Silvera Antúnez: Catálogo de Monedas del Uruguay 1831-2004
Sn: Schon
X: Unusual World Coins
Y: Yeoman, Modern World Coins, Current Coins of the World
Y Old: Yeoman, previous codes

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What wildcards can be used when searching?

There are two wildcards available - either * or % includes any characters.

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What is NCLT

Non Circulating Legal Tender. These are legal tender coins, and thus can theoretically be used to purchase goods or services, but are not intended to be used in commerce. They are produced with the sole intention of being sold to coin collectors. Coincat allows you to exclude NCLT (or circulating coins) from search results.

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How are Euros listed?

While Euros are legal tender through most of the EU, the coins at least are issued by individual countries. Therefore they are listed under the country which issued them. Euro coins issued by Spain, will be visible in a listing of all Spanish coins. For a listing of all Euros, enter Euro* in the denomination field in the search page. Euro cents are listed as just that.

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How many types and years are in the database?

At present there are 20972 different types listed, and 88044 different years, mintmarks & striking types listed. This is growing all of the time.

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My Collection

How do I back up my collection?

Simply select "My Collection" from the menu and choose "Export (Backup) my Collection". You will then see a prompt asking where you want to save the resulting file. The file is a standard tab delimited text file. It can be opened in Excel or any number of other programs

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How do I import my collection?

The easiest way is to use the backup file you created using the instructions above.

Failing this, the you will need to create a text file with your collection in it. This file must be in the following format:

A tab delimited text file.

The first line is reserved for headers and any data in this line will not be imported.

All fields must be in the same order and format as the demonstration file here.

All fields must be repeated for each line and the country must be on each line, not just the first one.

To create a tab delimited text file within Excel (and many other packages) choose 'Save As', and in the 'File Type' dialog, select 'Text, Tab Delimited'.

Once you have an upload file, select 'My Collection' from the menu and locate the file in the dialog box and click 'Import'.

This will place your import in the queue for import processing. After the import processing has been completed, you will receive an email saying that you can go to the next step, processing this imported file by clicking the 'Process imported file' link within 'My Collection'.

The aim of this process is to ensure that the coins you have imported are matched to the correct types within the database. For each coin you have imported there is a check to see if they match an entry in the database. If all of the checks are ok, then the coin can be imported into your collection. Any differences can be corrected at this point.

The checks are as follows:

Does the country match those in the database?

Remember that the country names must be in English, ie., Italy, not Italia. If you have used names in another language throughout your file, it will probably be simpler to go back to your import file and replace them all there. If there are only a few differences in spelling, they can be corrected on the import page.

Does the catalog name and number match one in the database?

Again, the catalog number must be exactly as it is within the database; Krause numbers are stored as KM. If the catalog type does not match, there are a number of possibilities for this:
You have used a different variation of the catalog type eg., KM# - you will need to go back and correct this in your upload file.
The catalog type you are using is not in the database - you will need to add it and all of the catalog codes to the database.
The coin you are adding is not in our database - you will need to add it to the database, but first check that it is not already there as a slight variation on the code you have, and if it is not, add it.

If the catalog name and number match the one in the database, you will see the description of the denomination you entered, next to the description in the catalog. This is to allow you to check if the coin is being added to the right type. So if you see that your US 25 cent coin is matched to a 1/4 dollar, then you can be happy that the match is probably correct, but if it is being matched to a 1 cent coin, something is wrong and you will need to investigate.

If the catalog number is correct, then the year, calendar, type (proof etc) & mintmark are checked to the database. If these are in the database, then you are able to add the coin to the database. Simply select the check box for all of the coins you are happy with and click the 'Process Import of Selected Items' button. If they are not, then you will need to add them to the database, but first check that it is not an error with your data.

Yes, this is a fairly painful process, but you should only need to do it once, and we think that you will see the benefits over various Word, Excel etc files very shortly. If you have any suggestions for making the process easier, please contact us.

In order to ensure that when a user searches for a particular type they see only one entry, rather than hundreds, we must ensure that all coins added to the database refer to one type. This necessarily restricts the flexibility of uploading collections, but makes the database searching more valuable. There is a tradeoff between ease of uploading a collection and the value of searches. This is an unfortunate fact of life. If you format your upload in the same manner as our database, we hope it will go relatively smoothly. Please remember that this will not be something you are doing every day. A little pain now will make life easier later, honest. If you are having major problems, please contact us, and we will attempt to make your life easier.

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I have a proof coin, how do I show this?

For each year, there may be a proof variety listed. Add your coin to this listing. If there is not, please add one. When setting up the database, we have focused more on circulating coins, as we believe that this will be of more value to the majority of our users. We may be wrong.

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How do I show the mintmark of my coins?

For each year, there may be a mintmark listed. Add your coin to this listing. If there is not, please feel free to add one. When setting up the database, we have not focused on the mintmark of coin.

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Trading Coins

I have had an unsuccessful trade/sale with a member, what can you do about it?

Unfortunately very little. All trades and sales are arranged between the two parties concerned. Coincat makes no warranties about the accuracy of the coins advertised on it, nor the honesty of the parties concerned, nor the reliability of whatever delivery mechanism agreed. Sorry for the bad news.

However, as coin collectors and traders, we know what it is like when a trade goes bad. Let us know, and if a pattern arises we reserve the right to cancel the subscription of the offending party.

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How do I send someone my trade list?

Go to the search page, and enter your name in the member box, and select as appropriate, coins for trade, sale or wanted. When you hit search, the resulting page will list a URL which any user can enter in their browser to show the coins you have made visible to the public. If you know the username of someone you wish to trade with, by entering their name in the member field you will see all of the coins they have for sale, trade, or have listed as wanted.

The recipient does not need to be a member to view the coins you have for sale or trade.

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General

What calendars does Coincat support?

Coincat will accept and convert to AD, dates from the following calendars:

Calendar Code: Description
AD Christian
AH Mohammedan
BE Buddhist
CS Chula-Sakarat
DP Jamahiriya Solar
EE Ethiopian
Jewish Jewish
KE Korean
ME Malabar
MS Monarchic Solar
Reign Reign
RS Bangkok era
SH Solar Year
Tibet Tibetian
VS Vikrama Samvat

If your coin does not have a date, enter it using the calendar type "ND" (no date).

If your coin uses a reign dating system (eg Japan or the Vatican), then use the "Reign" calendar type. The coin type will have (or need to have if you are adding the coin type to the database) the base year entered in the "Reign" field, and the AD conversion will be based on this.

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Are there any plans to add multiple language support to Coincat?

No. Sorry. The staff of Coincat are all monolingual, living in English speaking countries (a fact of life, please do not attempt to debate with us whether this is an ideal situation). We see it as a higher priority to improve the quality of the information in the database than attempt to translate it into languages we do not know. We would do a bad job of it, so believe it would be better not done. In the future, perhaps, but do not hold your breath.

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I have a coin from a country which is not in the database, How do I add it?

Congratulations, you have an unusual coin. We have attempted to include all of the countries which have minted coins in the last couple of centuries, but we are missing some of the less common ones. Please check that your country is not listed here with a variation on your spelling. If it is not, please contact us, and we will add it to the country list.

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I have found a bug in Coincat

We apologise. Please let us know using the Contact us page and we will fix it as soon as possible.

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Can I show the weights and sizes in imperial units?

Not at present. Sorry. As well as being only English speakers, we are children of the metric generation. Like multi language support, we see it as a higher priority to improve the quality of the information in the database than attempt to translate what data there is into different measurement bases. The metric system is good, trust us. In the future perhaps we will add imperial conversion, but do not hold your breath.

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