This Autographed William Harridge Oal Baseball has been Personally Signed by Mickey Mantle, Yogi Berra, Whitey Ford, Enos Slaughter, Phil Rizzuto, Don Larsen, Elston Howard, Billy Martin, Bill Skowron, Bob Turley, Norm Siebern, Hank Bauer, Joe Collins, Gil McDougald, Charlie Silvera, Johnny Kucks, Bob Grim, Jerry Coleman, Rip Coleman, Bob Cerv, Tom Morgan, Billy Hunter, George Wilson, Andy Carey, Tommy Byrne, Tom Carroll, and Tom Sturdivant of the New York Yankees. This item is 100% Authentic and comes with a PSA/DNA Certification Card and a matching numbered Hologram. The authenticity can be verified on Professional Sports Authenticator website.