Skybox E-X Ken Griffey Jr. Essential Credentials Now, #'d 4/10, is at Heritage Auctions. It's the first time the card has ...

Baseball card collectors of the 1980s and 1980s may or may not know the name Dick Perez, but they almost certainly know of ...

According to the Mariner's team checklist on Beckett.com, the card is an insert autograph ... Major League Baseball Hall of Famer Ken Griffey Jr. is introduced prior to the Mariners Hall of ...

Though Ken Griffey Jr.’s 1989 Upper Deck rookie card is by far his most famous card — and among the most iconic in history — ...