The 2026 Topps Allen & Ginter William Contreras #289 Mini Black Border trading card featuring the player William Contreras from the Milwaukee Brewers is an original MLB sports trading card. Made of card stock, this English-language card is part of the 2026 Topps Allen & Ginter set by Topps, a well-known manufacturer in the sports trading card industry. The card showcases a parallel variety design, making it a unique collectible for baseball fans and trading card enthusiasts alike.