Got spare change lying around? You might want to check for a quarter from 1999 that could be sold for thousands at an auction ...

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

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 ...

Mint-made errors occur when coins are made incorrectly at the mint, and they can be the result of deterioration of the minting equipment, accidents or malfunctions during the minting process, or ...

Add Yahoo as a preferred source to see more of our stories on Google. Peter Gudella via Shutterstock Minting coins isn't exactly an exact science. Even though most ...