Grading you can watch — not mail away and hope
Witnessed certification is the principle MAS was built on: transparent, in-person evaluation with results you can verify instantly. Here's what it means for your cards.
You can watch it happen
Witnessed certification means the evaluation isn't hidden behind a mail room. At MAS on-site events, you hand over your card and follow the process in person.
Chain of custody stays intact
Your card never disappears into an unmarked queue. From intake to sealed slab, the handling is transparent and accountable.
Same-day, not same-month
Instead of waiting weeks for a mail-in return, witnessed on-site grading can put a sealed, certified slab in your hands the same day.
Verifiable the moment it's done
Every card leaves with a unique cert number and a live population entry you — and any future buyer — can verify online instantly.
Frequently asked
What is witnessed certification?
Witnessed certification is grading and authentication performed transparently, where the submitter can observe the process rather than mailing an item away sight-unseen. It's the principle MAS was built on and now brings to card grading on-site at conventions.
Can I watch my cards being graded?
At MAS on-site convention events, you drop your cards at the booth and follow the process in person, with real-time SMS and email updates so you know the moment they're ready for pickup.
Is a witnessed grade still verifiable later?
Yes. Every MAS grade — on-site or mail-in — is sealed in a tamper-evident slab with a unique certification number that anyone can verify online, backed by a live public population registry.
See witnessed grading in action
MAS is taking on-site grading on the road — trials begin Q4 2026 with a national rollout in 2027. Read the announcement, or submit your cards online today.