402cardboard is a passionate sports-card destination that sources, authenticates, and showcases high-quality trading cards for collectors and investors alike. With a deep understanding of market trends and a commitment to transparency, 402cardboard combines expert grading insight, careful curation, and responsive customer service to help enthusiasts build meaningful collections and make confident buys and sells.

At 402cardboard we value integrity, expertise, and community: we prioritize honest authentication and clear communication so collectors can trust every purchase, we lean on deep industry knowledge to offer cards with provenance and market insight, and we foster a welcoming community where both rookie hobbyists and seasoned investors feel respected and supported. These values guide every decision—from sourcing and pricing to customer interactions—ensuring that our business grows by helping collectors preserve and celebrate the stories behind each card.