The Topps 2023 Series 1 MLB Baseball Trading Card Pack contains 16 cards featuring autographs and relics from Major League Baseball players, specifically from the Seattle Mariners team. Manufactured by Topps, the cards are made of card stock and are in standard size. This pack is part of the 2023 Topps Series 1 set, offering collectors a chance to add unique and valuable cards to their collection from the current season. Perfect for baseball enthusiasts looking to own a piece of the action.