The 1956 Topps Alvin Dark #148 Gray Back trading card is a valuable collectible item for baseball fans and card enthusiasts. Manufactured by Topps, this card features Alvin Dark, a player from the Major League Baseball team, New York Giants, from the 1956 season. Part of the base set, this card is a parallel variety with a gray back, adding to its uniqueness and appeal to collectors. A piece of history from the Major League Baseball era, this card is a sought-after item for fans of vintage baseball cards.