The 2021 Panini Donruss Optic Retro 1987 Signatures Zack Collins #RS87-ZC Auto trading card is a highly sought-after collectible item featuring the autograph of Zack Collins, a player for the Chicago White Sox in Major League Baseball. This single-insert card is part of the Retro 1987 Signatures set and is an original piece manufactured by Panini. The card is standard-sized, signed by Zack Collins using a label or sticker, and is a valuable addition to any sports trading card collection, especially for fans of the baseball player and team.