This Autographed Oml Baseball has been Personally Signed by Mike Yastrzemski of the San Francisco Giants. This item is 100% Authentic to includes a numbered hologram by Fanatics. We conducted an autograph signing with Mike Yastrzemski where multiples of the same item were signed. While the photographs are representative of this item, the size, placement and strength of the signature may vary. Each item is hand signed, therefore, each autograph is unique. This item can be verified through Fanatics.