The 1989 MSA Superstars 12 Card Set features trading cards of baseball stars including Mike Schmidt from the Philadelphia Phillies. This set represents a variety of players from Major League Baseball (MLB) in the 1989 season. Each card is part of the base set manufactured by MSA, offering collectors a glimpse into the baseball world of the late 80s. With cards of legendary players like Schmidt, Ozzie, Brett, Puckett, Mattingly, and Clemens, this set is a valuable addition to any sports trading card collection.