Official American League (Harridge) ball signed in blue ink by the following twenty-eight members of the 1956 World Champion New York Yankees: Mantle (Triple Crown & MVP season), Berra (sweet spot), Rizzuto (sweet spot), Hunter, Staley, R. Coleman, Carroll, Konstanty, Turkey, Howard, Silvera, Byrne, Collins, Lumpe, Cerv, Morgan, Skowron, McDougald, Kucks, J. Coleman, Larsen, Carey, Robinson, Richardson, Noren, Grim, Sturdivant, and Bauer. Signatures average 7/10. This ball is notable for the fact that it is free of any clubhouse signatures, which were common on Yankees team balls from the 1950s. As such, it remains an exceptional Yankees team-signed baseball dating from Mantle's historic Triple Crown season. Excellent to Mint condition. Full LOA from PSA.