Rifle-armed Hall of Famer Roberto Clemente signed this Official National League (Giles) ball with the single signature on the sweet spot grading 7/10. The ball is used and is in EX condition overall. There are nine other signatures on the ball, which dates around 1960 - the year Clemente first made the All-Star team and the capped the season with a World Series championship vs. the heavily favored Yankees.