That $1, $5 or $10 bill in your wallet might be worth way more than its face value if it has one of these types of cool serial numbers -- even hundreds or thousands of dollars. Here’s what to look for ...

Pull any bill out of your wallet. See the dark green numbers on the top-left and top-right corners? Those are serial numbers, and some are more rare than others. If you happen to have paper money with ...

There are worse things than having a wallet stuffed with $20 bills, especially in this economy. But did you ever stop to consider that those twenties in your pocket could be worth more than their face ...