How to Compare Centering Standards: A Collector's Guide

Estimated reading time: 8 min

Key Takeaways

• Comparing centering standards is crucial for maximizing card grading outcomes.
• PSA, BGS, CGC, and TAG all use different centering criteria and tolerances.
• Precise measurement tools, like Midpoint, help you estimate grades before submission.
• Understanding centering can save money and improve your collection’s value.

Table of Contents

• Section 1: Why Centering Standards Matter
• Section 2: Centering Criteria by Major Grading Companies
• Section 3: How to Compare Centering Standards Effectively
• Section 4: Tools and Tips for Accurate Centering Comparison
• Conclusion
• FAQ

Section 1: Why Centering Standards Matter

The Impact of Centering on Card Grades

Understanding how to compare centering standards is essential for collectors aiming to maximize card value. Centering refers to how evenly the borders of a card frame the artwork. Even small deviations can affect the grade—and thus the market value—significantly.

• Perfect centering can mean the difference between a PSA 9 and PSA 10.
• Off-centered cards often fetch lower prices, even if otherwise flawless.
• Different grading companies have unique centering tolerances and point deductions.

Why Collectors Should Care

Submitting a card for grading costs $30 or more. A poor centering grade can mean a lower return on investment. Comparing centering standards in advance allows you to:

• Decide which cards are worth grading.
• Choose the most favorable grading company for each card.
• Set realistic expectations for the final grade.

Section 2: Centering Criteria by Major Grading Companies

PSA Centering Standards

PSA uses a percentage-based approach, typically allowing up to a 60/40 centering ratio for a Gem Mint 10 on the front, and 75/25 on the back. Their standards are strict, especially on the card front.

• Gem Mint 10: 55/45 to 60/40 front; 75/25 back
• Mint 9: 60/40 front; 90/10 back

BGS (Beckett Grading Services) Criteria

BGS offers subgrades for centering. Their tolerance is slightly more lenient than PSA’s for a 9.5, but stricter for lower grades.

• Pristine 10: 50/50 front; 60/40 back
• Gem Mint 9.5: 55/45 front; 65/35 back
• Mint 9: 60/40 front; 90/10 back

CGC Grading Standards

CGC, popular for Pokémon and TCG cards, uses a scale similar to BGS, but with slight differences in thresholds for each grade.

• Gem Mint 10: 55/45 front; up to 75/25 back
• Mint 9: 60/40 front; up to 90/10 back

TAG Grading Approaches

TAG employs digital measurement for high accuracy. Their centering standards are transparent and consistent, as discussed in TAG Centering Standards Explained: Key Grading Insights.

• Automated, down-to-the-millimeter centering detection
• Strict thresholds for each grade tier

Section 3: How to Compare Centering Standards Effectively

Step 1: Know Each Grader’s Tolerances

Before submitting a card, review the published centering requirements for PSA, BGS, CGC, and TAG. These are usually listed on their websites or in collector guides.

• Print or bookmark each company’s centering chart for reference.

Step 2: Measure Your Card Accurately

Use a digital tool or ruler to measure border widths to the nearest millimeter. Compare these measurements against the standards above. For a detailed guide, see How to Measure Card Centering: Step-by-Step Precision Guide.

Step 3: Estimate Your Likely Grade

Match your measurements to the company’s ratios. For example, a card with 60/40 centering will grade differently with PSA versus BGS. Estimating ahead of time can help you avoid surprises and wasted grading fees. For a practical walkthrough, check Estimate Your Card: A Practical Guide Before Grading.

Step 4: Factor in Subjectivity

Remember that manual graders may have slight variances even within the same company. TAG’s digital process minimizes this, but for PSA, BGS, and CGC, a human eye can introduce small differences.

Section 4: Tools and Tips for Accurate Centering Comparison

Using Digital Card Centering Tools

Modern collectors use digital apps to streamline centering comparison. Midpoint helps you measure your card’s centering down to the millimeter and instantly estimates likely grades across PSA, BGS, CGC, and TAG standards.

• Upload a card photo for fast, objective analysis.
• Get actionable grade estimates to inform your grading decision.

Manual Methods for Double-Checking

If you prefer manual verification, use a ruler or caliper for border measurement:

• Measure the distance from the left/right and top/bottom borders to the artwork.
• Calculate the percentage difference to determine centering ratios.

Best Practices for Collectors

• Always double-check measurements before submission.
• Consult multiple sources for centering standards, as guidelines change.
• Pre-grade several cards to find the best candidates for professional grading.

For a step-by-step approach to pre-grading, refer to How to Pre-Grade Your Card: A Step-by-Step Guide.

Conclusion

Knowing how to compare centering standards between PSA, BGS, CGC, and TAG can make or break your card’s grading outcome. By leveraging precise measurement techniques and digital tools like Midpoint, collectors can make smarter, more informed submissions and avoid costly surprises. Stay up to date with centering criteria and always measure before you grade.

FAQ

Q: What is the most lenient grading company for centering?

A: Generally, CGC and BGS have slightly more lenient centering tolerances compared to PSA, especially on card backs. TAG’s standards are consistent and digital, which can be stricter for some cards.

Q: Can I use my phone to measure card centering?

A: Yes, apps like Midpoint let you upload a card image and measure centering down to the millimeter, providing instant grade estimates across major grading companies.

Q: Why did my card get a lower centering grade than expected?

A: Even small centering deviations or human error in manual grading can result in lower grades. Reviewing each company’s criteria and using digital measurement tools can help set accurate expectations.