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 coins worth a small fortune.

To improve your chances of getting a good deal, here are five places to look for rare coins worth a lot of money.

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