This is a Ken Griffey Jr. (as a member of the Seattle Mariners) 1989 Upper Deck Rookie Baseball card. This card has been hand-signed by Ken Griffey Jr. This autograph is certified by PSA/DNA (Professional Sports Authenticators). It comes encapsulated and authenticated by PSA/DNA in the plastic case. Please see pictures for details on the condition of this card. This Autograph has been graded Gem Mint 10!