Hall Of Fame & Stars Signed Baseball (Billy Martin, Mays +6) 12436 JSA X32114 This is a Official League Cushioned Cork Center Baseball that has been personally signed by Hall of Famers: Willie Mays, Bob Feller, and Brooks Robinson. And stars: Ron Santo, Johnny Sain, Tony Oliva, Billy Martin. This is the ball you will receive, please see photos for condition. This item includes a Letter of Authenticity from James Spence Authentication (JSA) and a certificate of authenticity from Denver Autographs.