The 1987 CCC Card Collectors Co. Mark McGwire Advertising Cards Set (10) is a collection of standard-size baseball trading cards featuring Mark McGwire from the Oakland Athletics. Manufactured in 1987 in the United States, these original English-language cards showcase the Major League Baseball player in his early career. A must-have for fans and collectors alike, this set captures a piece of baseball history with iconic imagery and information about the legendary player.