Official National League (Giles) ball signed in blue ink by the following twenty-eight members of the 1957 Pittsburgh Pirates: Clemente, Mazeroski (ch), Face, Skinner, Thomas, Friend, B. Smith, Pendleton, Fondy, King, Douglas, Groat, Mejias, Narron, Daniels, Arroyo, Kravitz, Witt, Foiles, P. Smith, Baker, Rand, Powers, Virdon, Freese, Kline, and Peterson.Excellent condition overall. Full LOA from PSA.