Errors increase the value of collectibles because a limited number go into circulation before it is spotted and corrected.

A manufacturing error on the 1999 Georgia state quarter has increased the coin’s value, and some collectors are paying as much as $10,000 for the affected 25-cent pieces.

If you are a rare coin collector, you know that it’s not always the perfect coins that are the most valuable. There are many criteria that make a coin worth lots of money in today’s currency, as well ...

WASHINGTON -- Sacagawea helped Lewis and Clark find their way to the Pacific Ocean, but she's having trouble finding her own way into the nation's cash registers. The image of the Shoshone Indian, ...

Minting coins isn't exactly an exact science. Even though most coins are perfect and uniform, small mistakes can result in error coins that are super valuable and ...