The 1989 Upper Deck Star Rookie Ken Griffey Jr #1 trading card is a highly sought-after collectible in baseball card trading. This card features the Seattle Mariners outfielder during his rookie season in Major League Baseball, graded at a high 8 by Professional Sports Authenticator (PSA). Manufactured by Upper Deck, this card is a valuable piece for fans and collectors alike, showcasing a young and promising player who went on to have a legendary career in the sport.