•Save 10% on all online submissions — Code: GRADE10•Tamper-evident graded slabs•Live population registry•Trusted by collectors, dealers & auction houses•Save 10% on all online submissions — Code: GRADE10•Tamper-evident graded slabs•Live population registry•Trusted by collectors, dealers & auction houses
About MAS Grading
Your #1 trusted source for trading card grading
MAS Grading is the sister service to MAS Authentication — the leading, most trusted name in collectible certification. We deliver accurate, reliable, and thorough grading for collectors, investors, and enthusiasts.
12+
Years of Expertise
250K+
Items Certified
50K+
Certs Issued
99.9%
Verification Accuracy
Why choose MAS
Built on trust & precision
Integrity First
Every grade is assigned with uncompromising honesty and consistency — no shortcuts, no favors.
Expert Team
Certified specialists with years of experience across sports, TCG, and entertainment collectibles.
Global Reputation
Recognized and trusted by collectors, dealers, and auction houses worldwide.
Fast & Reliable
Efficient turnaround without ever compromising accuracy or care for your cards.