Don't use that ten to pay for your lunch without giving it a second look. Knowing which 10-dollar bills are worth money can help make sure you don't trade a treasure for your tuna sandwich.

Barnes received a rare $10 bill worth potentially in excess of $250 as change for a $20 bill at TJ's Gas N Convenience on Park Street on April 2.

This video shows how much it costs to create dollar bills and coins. More from Finance The Federal Reserve System controls the amount of money that circulates in the United States. The production ...