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 ...

A Ken Griffey parallel card from the 1998 Skybox E-X 2001 set has surfaced at auction for the first time in nearly 20 years. The Ken Griffey Essential Credentials Now parallel numbered out of 10 ...