2026 Topps Series 2 Baseball Mega Box 

The 2026 Topps Series 2 Baseball Mega Box is the high-card-count retail configuration of Topps’ 75th-anniversary flagship release. It contains 196 cards and continues the 2026 flagship checklist with MLB stars, rookies, Future Stars, league leaders and team cards across a 350-card Series 2 base set.

The Mega Box’s primary exclusive is the 1991 Topps Baseball Crackle parallel, which applies a distinctive cracked-pattern foil treatment to the throwback 1991 design. The packaging also advertises retail-exclusive Holo Foil parallels, giving this format more exclusive color and card volume than the smaller Value Box.

Collectors can also chase anniversary-themed inserts and parallels such as Cover Athletes, 75 Years of Topps Die-Cut Autographs and 75 Years of Topps Baseball Autographs. Returning flagship chases include All Aces, Heavy Lumber, Home Field Advantage, 1952 Base Card Variations and 1991 Topps tribute cards.

Autographs and memorabilia are possible through programs such as Real One Autographs, Flagship Autograph Patch Cards, City Connect Swatches and one-of-one In the Name letter relics. Neither an autograph nor a relic is guaranteed in an individual Mega Box.