2026 Topps Baseball Series 1 Celebration Mega Box Marque_O-Pee-Chee All inserts offer Gold Treasures

All inserts offer Gold Treasures parallels by the unit

Holds up to 126 standard-size single-loading cards and 252 double-loading cards

and Palafin ex as playable foil cards

They are part of four different autograph sets on the checklist

Black Refractor Parallel: sequentially numbered up to 199

2026 Topps Baseball Series 1 Celebration Mega Box Marque_O-Pee-Chee All inserts offer Gold Treasures2026 Topps Baseball Series 1 Celebration Mega Box Configuration : 14 packs per box 14 cards per pack Topps Series 1 Celebration Mega Box arrives just in time for the start of the MLB season, continuing the flagship Series 1 collection and extending the celebration of Topps Baseballs 75th anniversary. The Celebration Series features the 350 card Series 1 base set, showcasing todays biggest MLB stars, top rookies, future standouts, league leaders, and