Before you spend that $20, check the serial number. Certain patterns and star notes can make ordinary bills surprisingly ...

Who would have thought that the dollar bills in your wallet could be worth more than their face value? Yes, you read that right. Some paper money, specifically those with fancy serial numbers, are ...

You've probably never given a second thought to the dollar bills sitting in your wallet right now. Most people don't. They're just money, right? Something to grab for coffee or parking meters, and ...