Though most state quarters are worth exactly 25 cents, a few rare releases and coins with unique misprints have sold for well ...

If you grew up in the 1990s or early 2000s, you probably remember collecting state quarters at some point. There were even cardboard maps in the shape of the U.S. where you could pop your latest finds ...

The 11-year program, "the 50 State Quarter program," ran from 1999 to 2008, during which each state was given a specific quarter design. Most U.S. state quarters retain their original value of $0.25.

Here are 20 rare state quarters worth additional value, according to Gainesville Coins, USA CoinBook and PCGS.

The 50 State Quarters program ran from 1999 through 2008, and it remains one of the most collected coin series in American history. Most of those quarters are worth exactly 25 cents. A small number, ...