Owning a jaw-dropping 142,438 individual cards of baseball icon Ken Griffey Jr., a feat that cements him as both the ultimate Griffey superfan and one of the hobby’s most dedicated collectors.

Mandatory Credit: Imagn Images / RVR Photos-Imagn Images The idea of holding onto a player's rookie card and waiting for it to go up in value has ... 1989 Upper Deck Ken Griffey Jr., a historic ...

an Upper Deck Ken Griffey Jr. Rookie card could be a very wise investment. Depicting the iconic slugger showing off his trademark grin, this particular card has “exploded [in value] in recent ...

But the number of Mariners Most Valuable Player winners remains at two. Granted, it's a good pair: 2016 Hall of Famer Ken Griffey Jr. and possible 2025 Hall of Famer Ichiro Suzuki. Griffey Jr. won ...

Whether you’re looking to break into the rare or valuable baseball card market or are already a card-flipping enthusiast, here are a few cards you might want to keep an eye on. Ken Griffey Jr ...