You never know when you might come across a valuable error coin, so it helps to know what to look for. Here's a look at five ...

Although $100 coins are uncommon in everyday life, several U.S. Mint issues—both historic and modern—have become some of the most desirable and expensive coins in the world. From 19th-century ...

Because of age, rare printings, or interesting features, coin collectors have shelled out serious dough for these 11 dollar ...

An "ultra-rare" coin could be worth a substantial sum, UK households are being warned. One example fetched £1 million back in ...

The $2 coin may not be the most commonly used denomination in the United States, but it has produced some of the most interesting and collectible coins in American history. From rare minting errors to ...