This unique piece contains individual autographs of New York Yankees Core Four members Derek Jeter , Andy Pettitte, Mariano Rivera and Jorge Posada. It is accompanied by a Certificate of Authenticity from Palm Beach Autographs and JSA. We have professionally framed the signatures along with a 16×20 Photograph and Yankees Patches of each player in a rich cherry wood frame. A tamper-evident hologram will be affixed to the item. Signed items are guaranteed to pass any third-party authentication with 100% Money Back Guarantee. Each signature is witnessed by a member of our staff or comes out of a private signing.