Outstanding high-grade Pittsburgh Pirates team ball dating from the club's historic 1960 World Championship season. Graded NM+ 7.5 by PSA. The signatures have been graded NM 7 and the ball has been graded NM 7, resulting in overall grade of NM+ 7.5 (PSA can add or subtract a half point to the overall grade for eye appeal, which they have done in this case.) The Official National League (Giles) ball has been signed in blue ink by thirty-four members of the 1960 Pittsburgh Pirates, including Roberto Clemente (sweet spot), Danny Murtaugh (Mgr., sweet spot), George Sisler, Bill Mazeroski, Don Hoak, Dick Groat, Harvey Haddix, Elroy Face, Clem Labine, Mickey Vernon (coach), Smoky Burgess, Virgil Trucks, Bill Virdon, Vernon Law, Gene Baker, Rocky Nelson, Gino Cimoli, Joe Gibbon, Fred Green, Dick Schofield, Sam Narron (coach), Oceak (coach), Levy (coach), Bob Oldis, and George Witt. Full LOA from PSA (graded NM+ 7.5).