It's pretty normal to get a fiver back when you get change, but some rare 5-dollar bills are actually worth a lot more than their face value. Spotting one of these treasures is all about knowing ...

You can call it a C-note, a Benjamin, a Franklin, or a Ben, but no matter what nickname you give it, a 100-dollar bill is always worth at least $100. In some cases, though, super rare 100-dollar bills ...