signed by 30 members of the World Series champion Yankees during a reunion. Key signatures include those of Hall of Famers Mickey Mantle and Yogi Berra on the sweet spot, with an additional signature from Hall of Famer Whitey Ford. Additional key signatures include those of Ralph Terry, Al Downing, Johnny Sain, Moose Skowron, Bob Turley, Art Ditmar, Luis Arroyo, Johnny Blanchard, Jack Reed, and Clem Boyer. . Sport: Baseball,Player: Mickey Mantle,Signed: Yes,Original/Reprint: Original,Autograph Authentication: James Spence Authentication (JSA),Product: Ball,Team: New York Yankees,Country of Origin: United States