Step-by-step on PSA, Beckett & SGC grading. From authentication to slabs, avoid pitfalls & boost resale. My Griffey Jr.
PSA led all authenticators with more than 1.97 million cards graded, including 1.27 million TCG and non-sports cards and more than 700,000 sports cards. October’s total is an all-time high for PSA, a ...
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