Each of these 11 official baseballs is signed by a member of the elite 500-Home Run club. The Hall of Fame lineup consists of: Mickey Mantle, Ted Williams, Willie Mays, Frank Robinson, Mike Schmidt, Eddie Mathews, Willie McCovey, Ernie Banks, Harmon Killebrew, Hank Aaron and Reggie Jackson. The signatures average 8/10 and the balls are NRMT with the exception of the Aaron and Mantle, which are a bit toned. There have only been 25 players to reach the 500-Homer plateau in the major leagues, with Albert Pujols just eight dingers away from becoming the next member.