Most dollar bills really are just worth a dollar, but a tiny printing quirk on some notes has turned pocket change into a serious payday. The most dramatic example is a specific serial number mistake ...

Collectors and dealers say some old $100 bills are quietly trading for many times their face value, turning an ordinary trip ...

Need to figure out your Apple Watch serial number? Follow along for how to find it even if you can’t read the serial number on the watch itself or power on the wearable. Apple has removed serial ...