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The 2026 Topps Series 1 Costco Flagship Collection Choose Your Card is a set of baseball trading cards manufactured by Topps for the 2026 season. This exclusive collection features rookie cards and is part of the Major League Baseball (MLB) league. Each standard-sized card is in English language and belongs to the base parallel/variety. Perfect for collectors looking to add unique and rare cards to their collection, this set offers a variety of options to choose from.

The 2026 Topps Series 1 Costco Flagship Collection Choose Your Card is a set of baseball trading cards manufactured by Topps for the 2026 season. This exclusive collection features rookie cards and is part of the Major League Baseball (MLB) league. Each standard-sized card is in English language and belongs to the base parallel/variety. Perfect for collectors looking to add unique and rare cards to their collection, this set offers a variety of options to choose from.