Graded Slab Certification & Multiplier Standards
Complete technical guide to grading tier standards across Professional Sports Authenticator (PSA), Beckett (BGS), and Certified Guaranty Company (CGC).
PSA (Professional Sports Authenticator)
- PSA 10 (Gem Mint): 55/45 to 60/40 centering, zero surface flaws, 2.5x–4.5x modern multiplier over raw NM.
- PSA 9 (Mint): 60/40 to 65/35 centering, microscopic edge wear, typically 1.0x–1.3x raw NM.
- PSA 8 (NM-MT): Minor print lines or slight corner softness.
BGS (Beckett Grading Services)
- BGS 10 Black Label: Quad 10.0 subgrades (Centering, Corners, Edges, Surface). High auction premium (5x–15x PSA 10).
- BGS 10 Pristine (Gold): Three 10.0s and one 9.5 subgrade.
- BGS 9.5 Gem Mint: Baseline equivalent to standard PSA 10.
CGC & ACE Grading
- CGC Pristine 10: Flawless card in a gold pristine label.
- CGC Gem Mint 10: Standard gem mint tier.
- ACE Grading: Custom thematic label presentation popular in UK and Europe.