A 10-spot is always worth at least ten dollars, but some rare 10-dollar bills can be worth a fortune (or at least as much as a small house). Learning to spot the most valuable 10-dollar bills means ...

While a $10 bill is always good to have, you might want to take a second look at it before using it at the store. That is because some examples might be worth well over $100,000. Though there are ...

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 ...