2026 Topps Series 1 Celebration Mega Box MLB

Celebrate 75 years of Topps baseball with the 2026 Topps Series 1 Celebration Mega Box. This format combines the 350-card Series 1 checklist with festive parallels and inserts highlighting the personalities and traditions of MLB.

Product contents

• 14 packs per box
• 14 cards per pack: 196 cards total
• Advertised box averages include 1 Opening Day base parallel and at least 7 Confetti base parallels

What to look for

Rookie names include Roman Anthony, Jac Caglianone, Samuel Basallo, Cam Schlittler, and Jacob Misiorowski. Look for Dugout Peeks, Walk This Way, Gameday Drip, mascot cards, and randomly inserted autograph or relic cards.

Cards are randomized. Named players and rare cards are possible pulls, and no particular card is guaranteed. Box averages are not guarantees of a specific hit.