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

Pull any bill out ... Those are serial numbers, and some are more rare than others. If you happen to have paper money with a unique or interesting serial number, it may be worth much more than ...

150) legal tender note is a really rare bill that is worth serious money ... at the serial number for these characteristics: Give yourself one extra second to look for rare 50-dollar bills ...

What to do if you think your one dollar bill is worth money If you have determined ... the next step would be to submit the ...

Collectors will buy certain coins and banknotes for far more than the actual face value of the currency such as one special ...

We like keeping a value chart handy to look up 50-dollar bills that might be worth money. These are some example values based on data gathered by US Currency Auctions. You'll see some of the ...