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.