This card has been hand signed Seattle Mariners by Griffey and has been slabbed and authenticated by Beckett. This card would make a great addition to any sports memorabilia collection!
Sign up for our Sports Integrity Newsletter for deals and upcoming autograph signings! Sign up to receive special insider notifications of deals and upcoming autograph signings! Ken Griffey Jr Signed Slabbed Mariners 1989 Upper Deck #1 Rookie Card BAS. My about us text goes here. My authenticity guarantee text goes here.