The 1999 penny error varieties remain some of the most exciting finds for collectors hunting through pocket change today.

This guide breaks down the best free coin identifier apps for U.S. and international coins, accuracy, error detection, and who each app is really for.

Some of the rarest and most valuable coins in U.S. history owe their worth to minting errors that slipped through unnoticed. Coins like the 1943 Copper Penny, struck in copper instead of wartime steel ...

The 1974 Lincoln Cent is one of the most common pennies from the 1970s, but a handful of rare varieties and high-grade examples can make certain coins surprisingly valuable. While most 1974 pennies ...