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 ...

One of the most eye-catching designs in U.S. currency history is the 1869 Rainbow $1 Legal Tender Note. Nicknamed for the colorful tints of blue, green, and red ink, this bill features a portrait of ...

If you’ve got a few dollar bills in your wallet, you might want to inspect the greenbacks before you spend them. Some U.S. coin and currency collectors are reportedly willing to pay thousands of ...