The 2025-26 Upper Deck Chicago Blackhawks Centennial Box Set celebrates the franchise’s first 100 years on the NHL ice. Founded on May 1, 1926, the Blackhawks have become one of the most prestigious franchises in NHL history. Their six Stanley Cups are tied for fifth all-time, and Upper Deck celebrates that heritage going into their 100th season with a special box set. The box set includes all 100 base cards, plus some extras. Collectors should expect to find three Bronze parallels and one Gold parallel per box. Sixty-one players from the set also signed cards for an Autograph parallel. Upper Deck seeded Autographs once every 10 boxes. Nearly half of the autographs are listed as SPs or SSPs, so completing the entire autograph run will be a challenge for collectors. Lastly, collectors will find one insert card in every box set. The Masters of the Madhouse checklist features players from throughout history who have made the arenas on Madison Street rumble. The Madhouse is a local nickname for Chicago Stadium, which operated from 1929-1994, and the United Center, home to the Blackhawks since 1995.