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MAS Authentication
Where to find us

Official Event Schedule

MAS travels the country for live, witnessed authentication. Find us at these upcoming conventions and signings.

August 2026

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MAS event Today

Events in August

All upcoming events

MAS Authentication

MAS Autograph Authentication — your #1 trusted source for professional autograph certification, trusted by collectors, dealers and auction houses worldwide.

Mail-in (USPS)
MAS Authentication
PO Box 3153
McAllen, TX 78502
UPS / FedEx
MAS Authentication
620 E Pecan Blvd #3153
McAllen, TX 78501
Real-time COA verification

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Signing announcements, event dates & collector deals.

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Prototype demo — data is mocked for preview.