Understanding 70/30 Centering: Meaning, Grading, and What to Expect

70/30 centering means one card border is 70% of the total and the opposite is 30%, making the card clearly off-center. This ratio usually limits the grade below gem-mint, and often below mint, though other card aspects matter too.

What Does 70/30 Centering Mean?

Centering describes how evenly the printed image sits within the card’s borders. A 70/30 centering ratio means the image is shifted so that one side’s border is noticeably wider (70%) while the opposite is narrower (30%). This is measured horizontally, vertically, or both. The ratio applies to the front or back of the card separately; grading companies usually judge both sides independently.

Is 70/30 Centering Considered Good?

70/30 centering is considered off-center by most grading standards. For collectors seeking visually balanced cards, this ratio is not ideal. Most grading companies require tighter centering for top grades, and 70/30 typically falls below those thresholds. However, the overall grade also depends on corners, edges, and surface quality.

How Does 70/30 Centering Affect Card Grades?

70/30 centering on the front usually prevents a card from achieving gem-mint or mint grades with major grading companies.
Each grader (PSA, BGS, CGC, SGC, TAG, etc.) publishes their own centering standards, which may change over time. Always confirm the latest requirements directly from the grader.
The back centering is judged separately and usually has more lenient standards, but should also be checked.
Even with perfect centering, poor corners, edges, or surface will lower the grade.

How to Measure Your Card’s Centering

Accurately measuring centering by eye is difficult. The Midpoint app (available on iOS and Android) detects borders from a photo and gives you the exact front and back centering ratios, so you can see if your card meets your target grader’s published standards before submitting.

Key Takeaways for 70/30 Centering

70/30 is noticeably off-center and usually caps the grade below mint.
Check both front and back centering, as both can affect the grade.
Always refer to the grading company’s current published standards for the most accurate requirements.
Measure your card’s exact centering with Midpoint to make informed grading decisions.

Get your card's exact centering ratio in seconds with Midpoint - free to start - and know its grade ceiling.

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FAQ

What does 70/30 centering mean on a trading card?

It means one border is 70% of the total and the opposite border is 30%, making the card clearly off-center.

Can a card with 70/30 centering get a gem-mint grade?

No, 70/30 centering on the front typically prevents gem-mint and often mint grades, but check the grader’s current standards.

Does the back centering matter for grading?

Yes, the back is judged separately with its own tolerances. Both sides can affect the overall grade.

How can I measure my card’s centering accurately?

Use the Midpoint app to detect borders and calculate the exact front and back ratios from a photo of your card.

Is centering the only factor in card grading?

No, corners, edges, and surface condition are also important and can impact the final grade.