This is an Official Major League Baseball that Zack signed at our private signing. We show a picture of Zack from our signing, you will also receive this picture. This item comes with a PSA/DNA ROOKIE BALL COA. ROOKIE BALL COA'S are very unique, it guarantees that the signature was signed and authenticated prior to the players 1st game of his second season. Having a ROOKIE BALL of a player should make your collection very unique. PSA is the leading authenticator in our industry!