Check your spare change carefully: this penny still in circulation may be worth as much as $85,000 because of a rare feature.

Most people think of pennies as the least valuable coins in circulation. They are often tossed into jars, forgotten in drawers, or left in old piggy banks for years without a second thought. However, every so often, an ordinary-looking penny turns out to be anything but ordinary.

Certain rare coins have become highly prized among collectors because of unique historical circumstances, limited production numbers, or unexpected minting errors.