The Beckett Baseball Card Monthly May 1989 Issue #50 features Roberto Clemente Canseco on the cover. This sports trading card publication focuses on baseball and provides information on various cards, players, and collectors. With a specific emphasis on Roberto Clemente Canseco, this issue offers collector's insights, news, and market values related to baseball trading cards from May 1989. Fans and collectors of baseball memorabilia will find this publication a valuable resource for expanding their knowledge and collection.