Take a dollar bill out of your wallet. How much is it worth? Say "a dollar," and chances are, you're absolutely right. But it's also possible that the humble Washington in your hands is worth much ...

If you’ve ever read the eight-digit serial number on a dollar bill, it was probably to play liar’s poker—or out of sheer boredom. But those digits are more than a passing diversion to a thriving ...

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 ...