You probably tuck $2 bills into your wallet without thinking much about them, but some of those notes can be quietly valuable. A few $2 bills can be worth thousands depending on their age and ...

Collectors and dealers say some old $100 bills are quietly trading for many times their face value, turning an ordinary trip to the ATM into a potential windfall. The most dramatic examples involve ...

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 ...