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

Rare coins and bills that haven't been released to the public are often worth a lot of money thanks to an error or specific ...

In some cases, it might be worth only $2.25. The highest value is $4,500 or more for uncirculated notes from 1890, although most of those bills range from $550 to $2,500. The values are the same ...