The 2025 Panini Prizm - Dingers! Ken Griffey Jr #14 Blue Prizm 99/99 BOOKEND! PSA 9 trading card is a highly sought-after collectible featuring baseball legend Ken Griffey Jr. This limited edition card, signed by Griffey Jr. himself, is part of the Dingers! insert set and is produced by Panini. With a blue prizm parallel variety and a print run of only 99, this card is a valuable addition to any sports trading card collection. The card showcases Griffey Jr. during his time with the Seattle Mariners in the Major League Baseball (MLB) World Series, making it a must-have for fans and collectors alike.