In certain cases, these bills can be worth thousands. Like all collectible coins and bills, the 2-dollar bill value depends on many factors, including condition, the year of production ...

An auction site called U.S. Currency Auctions estimates that uncirculated $2 bills from 1890 could sell for at least $4,500.

If you have a $2 bill burning a hole in your pocket, think twice before spending it at some store. The bill itself might be worth a lot more than two dollars — enough to build some serious wealth.