This set was Fleer's first update set and portrayed players with their proper team for the current year and rookies who were not in their regular issue. Like the Topps Traded sets of the time, the Fleer Update sets were distributed in factory set form through hobby dealers only. The set was quite popular with collectors, and, apparently, the print run was relatively short, as the set was quickly in short supply and exhibited a rapid and dramatic price increase in the mid to late 1980's. The cards are numbered on the back with a U prefix and placed in alphabetical order by player name. The key (extended) Rookie Cards in this set are Roger Clemens, John Franco, Dwight Gooden, Jimmy Key, Mark Langston, Kirby Puckett, and Bret Saberhagen. Collectors are urged to be careful if purchasing single cards of Clemens, Darling, Gooden, Puckett, Rose, or Saberhagen as these specific cards have been illegally reprinted. These fakes are blurry when compared to the real cards and have noticeably different printing dot patterns under 8X or greater magnification..