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 help you spot a bill that's special (and could be worth more than your car ...

Native American Sacagawea has been featured on the gold dollar coin since 1999 ... and Native American Pocahontas in a group photo on the $20 bill from 1865 to 1869. The Treasury Department ...