The legendary Mickey Mantle signed this m110 model Louisville slugger in bold blue Sharpie, rating a solid 9 out of 10. The bat weighs 33 oz and measures 34.5". Mantle is widely regarded as the greatest switch-hitter the game has ever seen, and he was one of the rare players to achieve the Triple Crown; a class that has grown by one this year thanks to Tigers third-baseman Miguel Cabrera.