12 Cards per Pack, 20 Packs per Box. 1 Autograph or Relic Card per Box. 2026 Topps Baseball Series 1 kicks off a year-long celebration of the 75th Anniversary of Topps Baseball, honoring the most iconic name in trading cards. For 75 years, Topps Baseball has defined the Hobby by capturing the game’s greatest players and moments, generation after generation. Built on the new 2026 design, Series 1 delivers a 350-card Base Set featuring today’s biggest MLB stars, top rookies, Future Stars, League Leaders, and team cards. Celebrate the legacy of Topps Baseball with anniversary-themed inserts and parallels that honor the brand’s rich history, including Cover Athletes, 75 Years of Topps Die-Cut Autographs, and 75 Years of Topps Baseball Autographs. Series 1 delivers depth across every tier of the rainbow with a wide range of numbered color parallels and a robust insert lineup. Fan-favorite designs such as All Aces, Heavy Lumber, and Home Field return, while new additions like Base Card 1952 Variations, Topps Profiles, and 1991 Topps Baseball spotlight elite talent and star power. Autographs and relics remain a cornerstone of the Topps Baseball experience, highlighted by Real One Autographs, Flagship Autograph Patch Cards, City Connect Swatches, and one-of-one In the Name relics.