Your #1 trusted source for autograph authentication
MAS Autograph Authentication is the leading and most trusted name in the industry. We specialize in accurate, reliable and thorough certification for collectors, investors and enthusiasts — from signed sports items to celebrity memorabilia.
Built on trust & precision
Integrity First
Every authentication is handled with uncompromising honesty and precision.
Expert Team
Certified specialists with years of experience across sports & entertainment.
Global Reputation
Recognized by collectors, dealers and auction houses worldwide.
Fast & Reliable
Efficient turnaround without ever compromising accuracy.
Advanced, industry-leading methods
At MAS we use advanced techniques to determine the authenticity of your autographed items. Our process is fast, secure and recognized by collectors, dealers and auction houses worldwide — making us the go-to resource for anyone looking to authenticate with confidence.
- Witnessed in-person signings
- Forensic signature comparison
- Tamper-evident holographic COAs
- Real-time online verification
Common questions
Get in touch
Questions about authentication, signings or your submission? We're here to help.
PO Box 3153
McAllen, TX 78502
620 E Pecan Blvd #3153
McAllen, TX 78501