Related: 5 Rare 100-Dollar Bills You Can Retire On A 50-dollar bill has to be worth at least the face value (the amount written on the front), so every single one is worth at least $50.
Related: 5 Rare 10-Dollar Bills Worth As Much As Your House A 100-dollar bill is always worth at least its face value, so that means it's worth at least $100. Very old bills, from the days of ...