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The value of a coin is dependent upon two factors: How many people are interested in owning the coin (i.e. demand) and how many examples of the coin exist (i.e. supply). There are a number of publications and websites that estimate values of coins based on these factors, which includes this site. You can go to the Coin Value Tables page to see the coin series we list. Each table consists mostly of historic value trends for a given coin across a spectrum of conditions; look for the most recently dated row to get an idea of what a coin is valued at in today's market. Since we don't have tables yet for all collectible United States coins, you may not find what you need, in which case, we recommend you visit PCGS or Numismedia. They have comprehensive value listings, and they're free to use.

Maybe, if it indeed is an error coin. To qualify as an error coin, the "goof" must have occurred in the manufacturing process while at the Mint. Alterations of any kind applied to a coin after it left the Mint do not count.

The first thing to do to determine if your coin has collectible value is to learn more about what type of error coin you may have. We have a page dedicated to State Quarter error coins, but many of the same error types apply to all coins. If you still can't find what you're looking for, we can recommend visiting the websites of a couple of coin dealers who specialize in error coins. They are Fred Weinberg and Rich Schemmer.

Both sellers and buyers of coins today have more options for getting together than did their counterparts of yesteryear, thanks to the Internet. We have an advice page for liquidating your coins, where Internet possibilities are presented, as well as doing things the old-fashioned way.

A good place to start is to check with the American Numismatic Association. There are many member coin dealers. Another place to look is the Professional Numismatists Guild. Chances are good there is a coin dealer somewhere not far from you. Don't forget to check the phone book, too.

There are many grading companies; some of them are reputable... others are not. In our opinion, here are four of the best:

• www.pcgs.com
• www.ngccoin.com
• www.anacs.com
• www.icgcoin.com
  
  

For starters, for an object to be technically termed a coin, it must have a face value denomination, issued by an authoritative entity (e.g. the US Mint). If this is missing, then you know it can't be a coin. If its not a coin, then it is more properly called a medal or token. Over the years, many medals and tokens have been produced, a few of them by the government, most by private means. As collectibles, a few of them have some value, but most do not.

There are several things you can do to gather facts about your object: (1) Do a "Google" on a specific phrase stamped on the object. If there are others like yours, this is a good way you can find some information on it. (2) Go to a coin forum and post a photo of the object. Many forum members are experts in exonumia and can help you. (3) Do a search on eBay for the object. Use specific phrases in your search criteria. Not only may you learn more about your medal, you can get an idea of how much someone might be willing to pay for it.

Very little. Its nothing but a gimmick coin someone has created. Some of them a quite sophisticated, but none command respect from numismatists. Perhaps on eBay, it might be worth a few bucks.

This is a coin-like insert the Mint included in an annual Mint Set or Proof Set. ("P" for Philadelphia Mint, "D" for Denver Mint). Someone broke out the set from its Mint packaging, leaving the insert to float around on its own. It has little value.

The Mint permits the public to tour the Philadelphia and Denver facilities. There are a few specific rules for scheduling a tour, which change from time to time. The best thing to do is visit the Mint's webpage on tour guidelines.

If you would like to ask a question about the US Coin Values Advisor website, or have other questions, comments or feedback, use the form directly below. We'll get back with you as soon as possible. Thank You!