These examples can give you an idea of what to watch for in your wallet ... really old bills, large notes, weird serial numbers, and original signatures. Related: 5 Rare 20-Dollar Bills Worth ...

$50 and $100 bills in circulation could very well be in your pocket, so it’s definitely worth exploring the contents of your wallet to see if anything is worth more money than its face value.

Featuring a low-profile design, the Bellroy Hide & Seek Low Wallet is made to fit short currency like US dollar bills ... in three slots and folded cash (20 bills) you can store in the two ...