The 2017 Topps Luminaries Home Run Kings Autograph Relics Mark McGwire card is a highly sought-after collectible for baseball fans and card enthusiasts. With a limited print run of only 15 cards, this graded PSA 9 card features an authentic autograph and memorabilia relic from the legendary player Mark McGwire. As part of the Home Run Kings Autograph Relics insert set, this rare card is serial numbered and a valuable addition to any sports trading card collection, especially for fans of the Oakland Athletics team.