Autograph
Authentication
The #1 trusted name in professional autograph certification. Verify, submit and protect your collection with confidence.
Everything a collector needs
From live signings to instant verification, MAS covers the full authentication journey.
Four steps to certified
Submit
Start an online submission and choose your authentication service.
Receive & Log
Our team logs your item and confirms it into the MAS system.
Authenticate
Certified experts examine each signature with industry-leading methods.
Certify & Return
A tamper-evident COA + hologram is issued and your item ships back.
Official event schedule
Collectors love MAS
MAS is the only service I trust for my grail cards. The COA lookup makes reselling effortless.
Fast, reliable, and recognized industry-wide. Their holograms give our buyers total confidence.
The send-in service is seamless. I submitted 40 items and every single one came back certified on time.
Ready to certify?
Submit your items online today and save 10% with code SAVE10.