The Wisconsin state quarter features a cow, cheese, and an ear of corn. One version of this quarter gives the corn an extra leaf low on the ear. This may have happened when a tool was pushed into the ...

Errors increase the value of collectibles because a limited number go into circulation before it is spotted and corrected. This Georgia quarter is a big one.

You might be sitting on a coin collection that's quietly losing potential worth while you read this. The 50-State Quarter program captured American hearts from 1999 to 2008, with roughly half the ...