No fewer than 14 members of baseball's esteemed 500 Home Run Club signed this Official American League (Bobby Brown) baseball: Mantle, Williams, Aaron, Mays, Banks, McCovey, Murray, Schmidt, Killebrew, F. Robinson, R Jackson, Mathews, F. Thomas and Sheffield. The ball grades NM-MT, while the signatures rate 9/10. Comes with SGC and PSA LOAs.