If the Mercury dime has a "1942/1 overdate error, it could be worth thousands in good condition," Elliott said, adding "consulting a professional grading service could be worthwhile if the collection ...

The 1964-1971 version of the coin is 90% silver and 10% copper, the same composition as Mercury Dimes. Determining the ... mint marks, and mint errors. The condition of a JFK Half Dollar plays ...

You never know when you might come across a valuable error coin, so it helps to know what to look for. Error coins can be divided into the following general ...

Gold and silver coins celebrating Sir Paul McCartney have been put up for auction. One gold and four silver pieces are being made available for collectors, the Royal Mint said, and they will be ...