Sports Cards

Centering on modern and vintage sports cards: Prizm, Topps Chrome, Heritage and pre-1980 issues.

2 articles

An old wooden desk with sleeved cards, a leather binder and a brass lamp

Sports CardsOct 14, 2026October 14, 202612 min read

Vintage Card Centering: PSA 7 and 8 Tolerances and How SGC Compares

PSA uses one centering scale for every era: PSA 8 is 65/35, PSA 7 is 70/30, PSA 6 is 80/20, backs 90/10. How that plays out on pre-1980 cards, plus SGC's ladder.

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An open card binder with rows of cards photographed from above on a dark desk

Sports CardsSep 30, 2026September 30, 202611 min read

Sports Card Centering: Prizm, Topps Chrome and Heritage — What Passes

How to measure sports card centering on Prizm, Topps Chrome and Heritage: which edge to measure, why top/bottom fails first, and what a PSA 10 needs.

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