Trading Card Glossary › Grading & Authentication
Centering
Also known as: OC, off-center
Centering refers to how evenly the printed image or design of a card is positioned within its borders. It is measured as a ratio — a perfectly centered card is 50/50, meaning equal borders on all sides. Centering is expressed as left-to-right and top-to-bottom ratios (e.g., 55/45). PSA requires centering of no worse than 60/40 for a PSA 9 and 55/45 for a PSA 10. Poor centering is one of the most common reasons a card receives a lower grade, and it is immediately visible to the naked eye.
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