The 1972 penny remains one of the most exciting coins for error hunters and collectors alike. This year produced some of the ...

Discover rare 1990 penny errors, their values, and how apps like CoinKnow help identify valuable coins instantly.

Turns out these common minting mistakes from 1979 are worth up to $5,000 - and you might have one sitting in your change jar ...

Explore the most valuable 1970 quarter errors, including overstrikes, doubled dies, off-center strikes, and wrong planchet ...