Card Centering Tool

PSA centering tolerances (front)

Centering sets the highest grade a card can reach. These are the widely-cited PSA front-centering thresholds:

• PSA 10 (Gem Mint) — about 55/45 or better
• PSA 9 (Mint) — about 60/40
• PSA 8 (NM-MT) — about 65/35
• PSA 7 (NM) — about 70/30

Backs are graded more leniently (a 10 generally allows ~75/25 on the back). This tool focuses on the front, where centering is judged most strictly.

How to measure accurately

• Scan straight-on at high resolution, or use calipers on the physical card.
• Measure to the same reference on each side — typically the edge of the printed image to the edge of the card.
• Be consistent with units. Ratios are what matter, not the absolute numbers.
• Do the back too. Reverse centering is judged more leniently, but it is still a gem-mint gate — plenty of 50/50 fronts come back a 9 because nobody checked the back.

What the result actually tells you

Centering is a ceiling, not a prediction. It is the one grading factor you can measure objectively at your kitchen table, which is why it is worth checking first: if the number rules a card out, you have saved yourself the submission fee before spending anything. If the number clears, the card still has to survive the three subjective factors — corners, edges, and surface — that the grader judges by eye.

Two practical consequences. First, on chrome and refractor parallels, centering is the most common single reason a visually flawless card grades a 9 instead of a 10 — worth checking before you pay a premium for a raw copy. Second, on cards where the design has no visible border, measure to the edge of the printed image or design frame and be consistent; the ratio still holds even when the “border” is coloured rather than white.

Once you have your number

The centering ratio is step one of a decision, not the whole decision. Where to go next:

• Centering clears? Run the numbers on whether grading pays at all with the grading ROI calculator, then read should you grade your Saka cards? for how PSA, SGC and BGS differ on turnaround and cost.
• Centering fails? The card is still worth owning — it is just a raw card, not a submission. Log it in the collection value tracker and keep the grading budget for a better copy.
• Buying instead of grading? Already-slabbed cards remove the guesswork entirely — browse graded cards and slabs, or see which Saka cards are worth the submission in the first place: Saka rookie cards and Saka autographs and top cards.
• Not sure what you have? Parallels and refractors explained covers how to identify the version you are holding, and what is a Saka card worth covers how grade changes the market for it.

New to the player entirely? Start at the Bukayo Saka card hub or the full collecting guide.