As with just about any asset, a coin's value is determined by its market demand. This means that coins in short supply often ...

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 ...

Early issue Peace dollars with errors were part of a November sale by Stack's Bowers Galleries that gave error collectors a ...