SGC Centering Standards: Tolerance for Each Grade, Front & Back
SGC assesses card centering as part of its 1-10 grading scale, but publishes less granular centering standards than PSA or Beckett. Here's what you need to know to evaluate your card's centering for SGC grades.
How SGC Grades Centering
SGC (Sportscard Guaranty) considers centering as a critical factor in its overall card grade. For high grades like SGC 10 Gem Mint, centering must be excellent and nearly even on both front and back. However, SGC does not publish exact percentage tolerances (like 55/45 or 60/40) for each grade.
What Centering Tolerance Means for Each Grade
- SGC 10 (Gem Mint): Requires outstanding centering, with borders appearing very even. Minor shifts may be allowed, but noticeably off-center cards will not qualify.
- SGC 9.5 and Below: As the grade decreases, SGC allows for slightly more off-center cards, but still expects visually balanced borders for higher grades. Lower numerical grades permit more noticeable centering imperfections.
Always check SGC’s current published standards, as they may update or clarify their guidelines over time.
How to Measure Your Card’s Centering
Since SGC does not provide exact ratios, the best approach is to measure your card’s centering precisely and compare it to examples of SGC-graded cards. The Midpoint app (iOS and Android) lets you photograph your card and instantly measures the exact front and back centering percentages, so you can judge how even the borders are before submitting.
Remember: Centering Is Only One Grading Factor
While centering is important, SGC also evaluates corners, edges, and surface quality. Even perfectly centered cards may not achieve the highest grade if there are flaws in other areas. Always inspect your card holistically before deciding to submit for grading.
Measure your card's exact front and back centering in Midpoint - free to start - so you know its grade before you pay to submit.
Try MidpointFAQ
What centering is needed for an SGC 10 Gem Mint?
SGC 10 Gem Mint cards require excellent, near-even centering. SGC does not publish exact percentage tolerances, so judge by how balanced the borders appear.
Does SGC publish exact centering ratios for each grade?
No. SGC provides general centering guidelines but does not specify exact front/back percentage tolerances for each grade. Always check their latest standards.
How can I measure my card's centering before submission?
Use the Midpoint app to photograph your card and get precise front and back centering percentages, helping you assess how even the borders are.
Is centering the only factor in SGC grading?
No. SGC considers centering along with corners, edges, and surface quality when assigning a grade. All factors must be strong for top grades.
Should I compare my card to SGC-graded examples?
Yes. Comparing your card's centering to examples of SGC-graded cards can help you estimate how it may be evaluated, especially since exact tolerances are not published.