Seeing a $2 bill is rare but there are actually millions still in circulation. A select few are worth much more than the face ...

All about the 1 dollar bill exchange rate In 2014 and 2016, the US Bureau of Engraving and Printing accidentally printed ...

Even more rare are 1861 bills with low serial numbers, so they're the most valuable. A serial number 1 10-dollar demand note sold at auction in 2014 for $381,875. Very rare, the 1878 silver ...