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

Despite 11 billion minted, the 1988 Lincoln Penny offers rare errors—like the Doubled Ear (worth up to $3,000+), Flared G, ...

The 2003 Nickel Error List contains some of the most sought-after minting mistakes that collectors actively hunt for today. These errors can transform a five-cent coin into a valuable treasure worth ...