Will My Card Get a PSA 10? What Actually Stops It
A PSA 10 is not “a card with nothing obviously wrong with it”. It is a published standard with stated tolerances, and most cards that come back a 9 were never going to be a 10 — the flaw was already there when the card left the printer, or when it left the pack.
Here is what PSA measures, what the numbers mean when you are holding the card, and how to check one against the standard before you pay to find out.
What are the PSA 10 requirements?
PSA’s published standard describes a GEM-MT 10 as a card that is “virtually free from any physical defects”. In practice that means four perfectly sharp corners, sharp focus, full original gloss, centering inside the tolerance below, and — PSA is explicit about this one — no staining of any kind. A slight printing imperfection is allowed, but only if it does not impair the overall appeal of the card.
Four things are being judged: centering, corners, edges and surface. PSA uses those same four headings in its Grader Notes feature, which annotates the defects a grader found — “Bend, Top Left”, “Fraying, Center Right”, “Discoloration, Front, Top Half”. Grader Notes are included from the Express service level upwards, so on a Standard submission you get a number and no explanation.
How far off-centre can a PSA 10 be?
This is the only part of the standard with hard numbers against it, which makes it the one part you can check yourself without guessing. PSA’s tolerances:
| Grade | Front centering | Back centering | Wider border vs narrower, front |
|---|---|---|---|
| GEM-MT 10 | 55/45 to 60/40 | 75/25 | up to 1.5× |
| MINT 9 | 60/40 to 65/35 | 90/10 | up to 1.9× |
| NM-MT 8 | 65/35 to 70/30 | 90/10 | up to 2.3× |
Source: PSA grading standards, checked 19 October 2026.
The right-hand column is the useful one. A 60/40 card — the absolute limit for a 10 — has one border half as wide again as the opposite border. On a modern Pokémon card with a thin yellow frame, that is plainly visible once you know to look. If one border is obviously fatter than the other at arm’s length, the card is not a 10 on centering and nothing else about it matters.
Note how much looser the back tolerance is. A 10 can be 75/25 on the reverse, meaning a border three times the width of its opposite number. Collectors write off cards for back centering that is comfortably inside tolerance. The front is where submissions die.
PSA does reserve some latitude: “at the grader’s sole discretion, a small variance may be permitted on occasion based on the card’s overall eye appeal.” That cuts both ways. It is not a loophole you can plan around.
Why do corners stop more tens than anything else?
Centering is the flaw people check. Corners are the flaw that actually gets them, because a corner that looks sharp in your hand is being judged under a lamp and magnification.
Most corner damage is already done before you ever see the card. Cards are cut, stacked, machine-collated and dropped into a pack, and a sheet that is a fraction out of alignment produces a soft corner on everything in the run. Then the card gets riffled out of the pack by someone’s thumbnail. “Four perfectly sharp corners” is a high bar and the honest answer is that a majority of pack-pulled cards do not clear it.
Check corners under a bright light with the card tilted, not flat on. A rounded corner catches the light differently from a sharp one, and a tiny white dot at the very tip is a fibre break that the grader will see at magnification even if you cannot.
What counts as a surface flaw?
More than scratches. PSA groups print defects under the “PD” heading and describes them as “the flaw in the printing process that causes a card to have some degree of ‘snow'”, along with print dots — a “fish eye” — and print lines.
Where the flaw sits matters as much as how big it is. PSA’s own position is that a print defect in a background area may not cost anything, while the same flaw on a subject’s face often will, because “the flaw cannot hide and the card will often be downgraded”. A print line running through a holo pattern is far more visible than the same line across a dark border.
There is a useful exception. Where a flaw appears on every known copy of a card, PSA notes that “the flaw is accepted in the collecting community as simply part of the card” and 10s remain achievable. If a card is notorious for a print line, the print line is not what is stopping yours.
The surface flaws you can still cause yourself, after the pack: holo scratches from a card sliding against another card, and gloss loss from friction inside a sleeve that is too loose. Both are avoidable and both are permanent.
Does edge whitening matter that much?
On a light-bordered card, minor edge wear can hide. On a black or dark-bordered card it cannot — every nick in the cut edge shows as a white speck against the ink, and those cards are notoriously hard to get into Gem Mint for that reason alone. The edge is also the part of the card most exposed to handling, so it accumulates damage in storage rather than arriving with it.
If you are looking at a dark-bordered card and weighing up a submission, look along each edge with the card held almost edge-on to a light. Whitening that is invisible face-on lights up at that angle.
What is a qualifier, and do you want one?
PSA still issues qualifiers alongside the numeric grade on its current grading standards. The four are:
- OC — centering below the minimum standard for the grade
- ST — staining below the minimum standard for the grade
- PD — significant printing defects
- MK — writing, ink marks, pencil marks
A qualifier lets a card hold a higher number while flagging the one flaw that would otherwise have pulled it down. It is not a free upgrade: it tells any buyer precisely which defect the card has, and most price it accordingly. If your card’s problem is centering, a qualified grade is not the way around that.
Can you tell whether it is a 10 before you send it?
Not with certainty — nobody can, and anyone promising otherwise is selling something. But you can check a card against the published tolerances, which is where most submissions fail, and you can do it in a few seconds rather than by eye.
That is what pre-grading in SlabShield Vault Pro does: photograph a loose card and it returns the grade PSA would likely give it, measured against their published centering tolerances. It is a Pro feature at £4.99 a month, or £49.90 for the year. The free Vault will scan a graded slab and read the grader and grade off the label, but pre-grading a raw card needs Pro.
The arithmetic is the argument here:
| What | Cost |
|---|---|
| One card, PSA Standard service | $59.99, about £45 |
| Vault Pro, one month | £4.99 |
| Vault Pro, one year | £49.90 |
PSA’s Standard service is $59.99 a card with an estimated turnaround of 90 to 100 business days, checked 19 October 2026. At the Bank of England spot rate of 0.7546 on 15 October 2026 that is £45.27 — and that is the fee alone, before postage in either direction, PSA’s international return charge or import VAT. The full landed cost from the UK is meaningfully higher.
So one card’s grading fee is roughly nine months of Pro. If checking the centering talks you out of sending a single card that was never going to 10, the subscription has paid for itself several times over — and you have saved yourself three months of waiting to be told something you could have known in October.
Whether the uplift justifies the fee at all is a separate question, and one worth running the numbers on: the break-even maths covers it. If you have not settled on a grader yet, PSA, BGS, CGC and ACE compared is the other half of that decision.
How should a card be stored between the pack and the post?
Everything above assumes the card arrives at PSA in the condition it came out of the pack in. Most of the damage that costs a grade happens in the weeks before submission, not at the grader.
A card goes into a soft sleeve first — a clear penny sleeve stops the surface rubbing against anything, and that is the flaw you cannot undo. The sleeved card then goes into a rigid 35pt toploader, which is what stops corner and edge damage. For a card you have already decided is worth the submission fee, a 35pt magnetic card case holds it without pressure and without the card sliding at all.
Do not put a card into a toploader unsleeved. The toploader’s interior is harder than the card’s surface and the card will shift inside it.
The short version
Check centering first, because it is the only criterion with a number against it and it fails more submissions than anything else. Check corners under a light at an angle, not flat. Accept that print defects are mostly not your fault and mostly not fixable. And run the card past the tolerances before you commit £45 and three months to the question.