SGS Grading Services
Supreme Grading Service. Independent grading company offering sports cards and TCG authentication with subgrades.: Professional Sports Card & TCG Grading Standards
Market Analysis: SGS
Emerging / Boutique: As a newer entrant (Est. 2021), SGS offers specialized services often missed by major graders. However, collectors should be aware that secondary market liquidity is still developing. These slabs are best suited for 'Personal Collection' (PC) preservation rather than short-term flipping.
Technology & Protocol
Analog Legacy: SGS relies on the traditional 'Human Expert' model. Three or more professional graders review the card under magnification. This approach is favored by vintage collectors who value 'Eye Appeal' over rigid mathematical perfection. Using a 1–10 scale, they evaluate cards based on the four core subgrades. Operating in the heart of the hobby, SGS competes directly with industry titans. To succeed here, they focus on aggressive turnaround times and competitive bulk pricing.
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