The 1990 Grand Slam Bo Jackson Promo Card featuring Bo Jackson of the Kansas City Royals is a sought-after collectible for baseball fans and card enthusiasts. This limited edition sports trading card is made of card stock with a 20 pt. thickness, showcasing the talented athlete in a promotional design specific to the Grand Slam set. With its association with a popular MLB player and team, this vintage card captures the essence of a historic season in 1990, making it a valuable addition to any sports memorabilia collection.