If you've ever collected or casually held onto state quarters, you might be surprised to learn some of them could be worth far more than their 25-cent face value. While most state quarters are common ...

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.