We sign our names all the time – on credit card receipts, contracts, and notes to our loved ones. However, when these 30 people sign their names, they’re worth a lot more. These famous signatures are worth thousands to millions of dollars. Actors, politicians, athletes, and musicians make up the list of the most valuable and coveted autographs of all time. From rock legends to historical figures, we’re counting down the most expensive signatures ever inked. You’ll be surprised to learn just how much an autograph can be worth. Read on to find out whose signature is worth the most.