There are some rather valuable - and unique - dollar bills out there that are worth a fortune.

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Theeradech Sanin via Shutterstock Natasha Bedingfield might have had a pocket full of sunshine, but there’s a chance you’ve got a ...