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.

But the rookie card bonanza took off with the 1989 Upper Deck Ken Griffey Jr., a historic card for various ... His rookie card was one of the most sought-after throughout 1990 and into the 1991 ...

Cards from the 1980s and 1990s hold a meaningful place in the hobby. Some of them still influence the market, years after ...

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 ...