PSA Grades Explained: What 1–10 Really Mean (and Half Grades)

PSA grades cards on a 1-to-10 scale, but the real-world price difference between a PSA 9 and a PSA 10 on the same card can be 5x or more. Understanding what each grade actually means — and what graders are looking for — is the difference between submitting confidently and gambling at $36 a card.

The PSA grading scale at a glance

PSA 10 Gem Mint — what graders actually require

A Gem Mint 10 is, in PSA's words, a virtually perfect card. The bar:

• Centering: 55/45 to 60/40 or better on the front; 75/25 or better on the back.
• Corners: Sharp under 10× magnification. Any fuzzing knocks it to a 9.
• Edges: No chipping, whitening, or rough cuts.
• Surface: No print lines, scratches, indentations, or stains.
• Focus: Image printed crisply, not blurry or doubled.

Modern cards from the pack can fail any of these — even fresh out of a sealed booster. That's why pre-screening matters.

PSA 9 Mint — the most common "good" grade

A PSA 9 allows one minor flaw: slight off-center (up to 60/40 front), minor wax stain on back, very slight focus issue, or one tiny print spot. The card still looks essentially perfect to the naked eye, but a PSA 10 it is not.

On modern chase cards, the PSA 9 vs PSA 10 spread is brutal — a 2025 OP-13 Luffy Manga Alt might do $400 raw, $600 PSA 9, $2,400 PSA 10.

PSA 8 NM-MT — modern "meh", vintage "great"

PSA 8 allows moderate flaws: noticeable off-center (up to 65/35), slight corner fuzz, minor surface defects. On modern, an 8 usually trades at or below raw — not worth the grading fee. On vintage and pre-war, an 8 is excellent and commands a strong premium.

PSA half grades (8.5, 9.5)

PSA assigns half grades when a card sits between two grades. A 9.5 isn't a real grade — it means "better than a 9 but not quite a 10." The market treats 9.5s as premium 9s, usually 1.3–1.6× a clean PSA 9. They are NOT close to PSA 10 money on chase cards.

PSA qualifiers (OC, PD, MK, ST, MC)

Qualifiers are flags appended to a grade when one specific flaw is the only thing holding it back:

• OC — Off-Center. Most common.
• PD — Print Defect.
• MK — Mark (pen, pencil, sticker residue).
• ST — Stain.
• MC — Miscut.

Qualifiers crush resale value — a PSA 9 (OC) sells for a fraction of a clean PSA 9. PSA only adds qualifiers if you request them on the submission form. Most submitters opt out — better to take the straight numerical grade.

What grade should you target?

• Modern (1990–present): Submit only if you believe it grades PSA 9+. PSA 8 or below is usually a money-loser after fees.
• Vintage (1980 and older): PSA 7+ usually justifies grading. Pre-war stars in PSA 1–4 still hold serious value.
• TCG (Pokémon, One Piece, MTG): PSA 10 is the only grade with major premium on modern. PSA 9 = small premium. PSA 8 = loss.

Why your perfect-looking card came back a 9

Six things kill a PSA 10 that you can't see with the naked eye:

1. Microscopic corner fuzz under 10× magnification.
2. Print snow (tiny white specks across the foil).
3. Back centering — front looks perfect, back is 70/30.
4. Hairline scratch through the holo pattern.
5. Roller mark on the back from the printing press.
6. Slight focus issue on the photo or border art.

Most of these can be checked at home with a loupe before submitting. Walk through every one in our PSA pre-screening checklist.

Bottom line

Submit only the cards where a PSA 10 is realistic. The fee structure assumes you're chasing the premium — sending a card you suspect will 8 or 9 is throwing money at PSA. Use a pre-screening service (we offer free pre-screen on all grading submissions) to filter before you pay.