CLAREMORE, OK. – An Oklahoma man is offering $10,000 in exchange for one penny. Richard McPheeters is a coin dealer and collector in Claremore, and he is looking for a rare penny to complete a set.

You might be a millionaire without even knowing it. That dusty jar sitting on your kitchen counter could contain enough money to pay off your mortgage or fund a dream vacation. Sounds wild, right?

If you’ve ever run across a blank coin, chances are you thought a metal token got mixed in with your change by mistake. In fact, blank coins are not uncommon due to errors during the minting process.

Here are ten of the most valuable pennies to look for, as published by the site: A 1926-S Lincoln cent in mint condition with ...