Ken Griffey Jr signed Seattle Mariners 1989 Fleer baseball rookie card #548. The card has been authenticated and encapsulated by Beckett Authentic and the authentication number can be verified online. The image of the item is a stock photo, as we may have multiples of the item in stock. The Slabbed Card you will receive will be of the card described. (Same grade, Same authentication) You may or may not receive the exact Beckett serial number on the slab label shown in image.