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 ...

These coins that are still in circulation have been minted using the wrong materials, making them valuable to collectors ...

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

What Is the 1963 Lincoln Penny Made Of? The 1963 Lincoln penny is made of 95% copper while the remainder is 5% tin or zinc.