The Most Valuable '90s Baseball Cards Score big with these rare Ken Griffey Jr rookie baseball cards from the late 80s and early 90s! A must have for collectors and fans alike Grab yours and step up your 1994 Upper Deck MJ Rare Air Decade of Dominance Basketball Card Set VCP Price Guide A customer in Minnesota recently opened a retail box from Target and pulled one of the rarest Michael Jordan cards released in years a 1 1 Tune Squad autograph from Upper Deck's 1994 Upper Deck Michael Jordan Rare Air Proxibid Most Valuable 1990s Sports Cards Giant Sports Cards