Featured is a Ken Griffey Jr Seattle Mariners signed 1989 Donruss #3 rookie card. This card has been hand signed by Griffey and has been authenticated and encapsulated by PSA, receiving an autograph grade of Gem MT 10. This card would make a great addition to any sports memorabilia collection! SPECIFICATIONS Autographed By: Ken Griffey Jr Team: Seattle Mariners Sport: Baseball Authentication: Professional Sports Authenticator (PSA)