Even among the most involved of coin collectors, certain coins hold a special status as legendary. This rare quarter is one of those legends.

There's something to be said for collecting old coins. Some people do it for the fun of it or to have a cool story to tell.

Here are 20 rare state quarters worth additional value, according to Gainesville Coins, USA CoinBook and PCGS. Keep in mind that “error” coins — the ones primarily included on this list ...