90/10 centering

A 90/10 card is well off-center. On the front it limits the card to middle or low grades, and on the back it's past the 75/25 a PSA 10 allows.

Drawn to scale. The left border takes 90% of the combined left and right borders.

How 90/10 grades

The best grade each company allows when 90/10 is the card's worse axis.

Company	On the front	On the back
PSA	PSA 3	PSA 9
BGS subgrade	Below 7	8
CGC	CGC 3.5	CGC 9

BGS front subgrades here assume the other axis is well centered, since BGS judges both axes together. CGC doesn't publish back limits below a 9.

Measure your card

90/10 in millimeters

On a card whose left and right borders add up to 6 mm, 90/10 centering means a 5.4 mm border on one side and 0.6 mm on the other, a difference of 4.8 mm. That's easy to see at arm's length.

Questions

Can a 90/10 card get a PSA 10?

Not with a 90/10 front. PSA's Gem Mint 10 needs about 55/45 or better on the front. On the back, 90/10 is also past the 75/25 back limit.

Is 90/10 good centering?

90/10 is well off-center. On the front it limits the card to middle or low grades, and on the back it's past the 75/25 a PSA 10 allows.

See every ratio on the centering chart, or read the full centering requirements.