Grading Standards11 min read
Is 60/40 Centering a PSA 10? What PSA Says vs What Actually Grades
Is 60/40 centering a PSA 10? PSA's published Gem Mint standard is now 55/45 front and 75/25 back; 60/40 is the PSA 9 line. What that means for your card.
Grading Standards
What PSA, BGS, CGC, SGC, TAG and ACE actually require for each grade, with the official centering tolerances, qualifiers and how the companies differ.
5 articles
Grading Standards12 min read
BGS Centering Standards: Black Label, Pristine 10, 9.5 and 9 Explained
BGS centering standards per grade: 50/50 front and 55/45 back for a Black Label or Pristine 10, 55/45 for a 9.5, how subgrades set the grade, and BGS vs PSA.
Grading Standards15 min read
Does Back Centering Matter? PSA, BGS, CGC, SGC and TAG Back Tolerances
Yes, back centering matters. Official back tolerances per grade for PSA (75/25), BGS (55/45), CGC and TAG, why backs are looser, and how to measure them.
Grading Standards13 min read
PSA Centering Standards (2026): 55/45, 75/25 and Every Grade Explained
PSA's official centering standards for every grade, PSA 10 to 1.5, front and back: 55/45, 75/25, the 5% leeway, OC qualifiers and what 58/42 really gets.
Grading Standards13 min read
Card Centering Tolerances by Grade: PSA, BGS, CGC, SGC, TAG, ACE
Every official card centering tolerance by grade in one table: PSA, BGS, CGC, SGC, TAG and ACE, front and back, verified August 2026, and how to read it.