This Autographed Oml Baseball with the inscription of "Sorry Mo...2001 WS G7 GW Hit" has been Personally Signed by Mariano Rivera & Luis Gonzalez of the Arizona Diamondbacks. This item is 100% Authentic to include a hologram by Beckett Authentication Services for the Luis Gonzalez signature. This item may come with the new Beckett Authentication hologram that has a scannable QR code rather than the traditional COA. If you would like to have a COA, you are welcome to reach out to Beckett for a printed certification once you receive your item. This is a BAS Witnessed Protection Program item which means a Beckett Authentication Service representative was present when this item was being signed. For the Mariano Rivera it will include a Certificate of Authenticity (COA) / hologram by JSA Witness. This is a JSA Witnessed Protection Program item which means a JSA representative was present when this item was being signed. We conducted an autograph signing with Mariano Rivera & Luis Gonzalez 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 JSA Witness.