Free tool to check your card centering before grading — PSA, BGS, SGC, MNT
Measure the border width on each side in millimeters (mm) or pixels. Use the same unit for all four values.
Centering is one of the four main grading criteria. Even a mint-condition card can lose a full grade if the image is off-center.
PSA 10 requires roughly 60/40 centering on the front and 75/25 on the back. Use this tool to screen candidates before submitting.
MNT Grading, PSA Canada, and BGS all use centering as a key factor. Card Source Canada helps you pre-screen cards.
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