Here are the most valuable bills still out there ... whether the American dollar has gone up or down. However, collectors place extra value on rare bills in good condition, so these $50 would ...

A twenty doesn't buy what it used to, but some rare 20-dollar bills can actually be worth a lot. Knowing what to look for can ...

This chart comes from auction info gathered by USA Currency Auctions about past sales prices of 5-dollar bills. It includes ...

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.