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 ...

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.

All collectibles have one thing in common that determine their value, and that is condition. A given collectible will be more valuable in better condition. Take Star Wars action figures where a loose, ...