As with just about any asset, a coin’s value is determined by its market demand. This means that coins in short supply often see higher demand — and higher values. With coins, supplies are limited ...

A manufacturing error on the 1999 Georgia state quarter has increased the coin’s value, and some collectors are paying as ...

Production errors and unique background stories make some historic coins now worth way more than their face values. And holding on to them, including those in the list below, could mean increased ...

Stumbling upon what might be a rare coin or unusual bill is more common than you think. People discover these hidden ...

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 steel ...

These eight quarters may look like just pocket change. But in the right hands, they could be exchanged for a fortune.

The most valuable Roosevelt dime of all is the 1975 No-S proof, and that's because of a very rare minting mistake. In fact, it's one of the rarest US coins that exists, and there are only two known ...

When the U.S. Mint launched its 50 State Quarters Program in 1999, the point of the 10-year initiative was to honor each of the 50 states and share a little bit of history via free classroom lesson ...

The rare coin, which has previously been sold for more than £500, is still believed to be in circulation ...

A “WONKY” 50p coin could leave Brits quids in if they spot the “very rare” piece in their purse. The deformities of the ...

They must feature specific errors to be particularly valuable ...