Instructions
Consult the "Official Red Book" on United States coins. This guide explains the history and covers the values of historical coins minted by the United States. It lists every single coin ever minted along with a photograph making it easier to identify.
Search the Internet for the dates and mint locations of famous and rare dimes. Cross-reference this list with the dimes in your collection to see if any of them fall within the categories. Numerous dates and mint marks can make a dime rare.
Scour online markets and stores to find out what prices similar dimes are being sold for. This step will ensure you will get the maximum price for your rare dime if you decide to sell it. Online auctions and marketplaces are excellent places to sell rare dimes for the highest possible price.
Read and learn as much as you can about identifying rare dimes. Vast stores of information can be found in books, online message boards and forums. Ask questions and post pictures to see if a more experienced collector can help identify your coins.
Appraise your coins at a local coin dealer. Most major cities have at least a few shops where a knowledgeable coin expert can appraise valuable coins. Remember to ask questions and learn as much as you can from these experts. This will expand your knowledge about identifying rare dimes.