Hank Aaron and Willie Mays signed the same card for the first time in 2003 Topps Stadium Club Co-Signers Hank Aaron and Willie Mays dual autograph. They were first and third in career home runs at the time it was released. The card is now worth about $80,000. They signed again four years later with the same result. It's now considered one of the most valuable baseball cards ever sold at auction. The card earned its owner over $1 million. Mays had 1,904 hits during his career. He was a five-time MVP winner and the only player to hit over.300 three times in a season. Aaron broke the record held by Mays with 755 home runs over the course of his career. He was also a five-time MVP winner and the leader in many other batting categories including hits (1,973), total bases (5,987), extra-base hits (969), and RBIs (1,844). Both men passed away within a few months of each other in December 2015. They were both 75. Their cards are now in the Baseball Hall of Fame in Cooperstown, New York.