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

The 50 State Quarters series, issued by the United States Mint from 1999 through 2008, has been credited with reinvigorating ...

When the U.S. Mint launched its 50 State Quarters Program in 1999, the point of the 10-year initiative was to honor each of the 50 states and share a little bit of history via free classroom lesson ...

Today's coin identifier app technology uses advanced AI to instantly recognize coins, estimate values, and even detect rare errors that could be worth thousands of dollars.