Mickey Mantle was a rare talent - and so are the inscriptions on these three baseballs signed by the Triple Crown winner and Hall of Famer. They include: "Commerce Comet," "HOF '74" and full name "Mickey Charles Mantle." The Official American League baseball (Brown) rates a 7.5, while the signatures average 8.5. Each ball comes with its own PSA LOA. Widely regarded as the greatest switch-hitter in baseball history, Mantle played his entire 18-year career with the New York Yankees.