The 2026 Topps Series 1 Baseball - Costco Sealed Super Box - Flagship Collection is a standard-sized sports trading card box featuring 184 cards from the Major League Baseball (MLB) season. This exclusive collection includes autographed cards of players like Shohei Ohtani and Mike Trout, with autographs authenticated by Topps. Manufactured by Topps in the United States, this box is a must-have for baseball fans looking to collect cards from top teams like the New York Yankees, Atlanta Braves, and Los Angeles Dodgers. The hard-signed autographs and MLB World Series-themed cards make this a valuable addition to any sports memorabilia collection.