The 2018 Topps Triple Threads Jumbo Relic Matt Carpenter #SJR-MCA2 Silver /27 is a highly sought-after trading card featuring a piece of memorabilia from the St. Louis Cardinals player. With only 27 copies in existence, this limited edition card is part of the Single Jumbo Relics insert set and is serial numbered for authenticity. It is a must-have for baseball card collectors looking to add a rare and valuable piece to their collection.