Because the 1964 coin was often melted down for its ... Related: Susan B. Anthony Dollar Values - 7 Coins to Watch For Minting errors tend to add value to coins because they're really rare ...

The 1964-1971 version of the coin is 90% silver and 10% copper, the same composition as Mercury Dimes. Determining the rarity and potential value of your JFK Half Dollars can be an exciting process.