11 autographs including Ted Williams on the sweet spot. The other 10 signatures on the ball, in no particular order, are Hank Aaron, Eddie Mathews, Reggie Jackson, Mike Schmidt, Frank Robinson, Ernie Banks, Willie McCovey, Willie Mays, Harmon Killebrew, and Mickey Mantle (the latter four all share one panel).. Sport: Baseball,Player: Mickey Mantle,Autograph Authentication: James Spence Authentication (JSA),Original/Reprint: Original,Product: Ball,Team: New York Yankees,Country of Origin: United States