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 ...

Coins that have mistakes or unusual features can sometimes turn into highly valuable treasures. Over the years, I've come across stories of collectors who discovered ...

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 ...