Jennifer Buchanan-Imagn Images Though he last played a major league game 15 years ago, Ken Griffey, Jr., remains one of baseball's most ... Deck Ken Griffey Jr. rookie card / TCDb RELATED: F ...

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 — it isn’t his most valuable card. That distinction currently ...