During World War II, the U.S. Mint switched to zinc-coated steel pennies to conserve copper for military use. However, a small number of 1943 pennies were mistakenly struck in copper ...

The WUCMAA proclaimed that the 1932-D Washington Quarter is one of the most sought ... Coming in at No. 2 on the Coin Trackers list, the 1943 Copper Penny could net you up to $250,000, depending ...