Collecting
Sports card condition guide
Condition is four separate assessments, and they are worth different amounts. Knowing which one your card fails tells you whether it is worth grading.
The four assessments
Every grading company evaluates the same four attributes, and every buyer does the same thing informally when looking at a raw card. Learning them is the difference between guessing and knowing what you have.
- Centring: how evenly the image sits within the border, measured as a ratio such as 55/45. It is usually the most heavily weighted.
- Corners: sharpness and paper loss. Soft or rounded corners cap the grade quickly.
- Edges: chipping, especially on dark-bordered cards where any loss is visible.
- Surface: scratches, print lines, indentations, and any sign of alteration.
Checking each one at home
Centring is measured with a ruler or a centring tool, comparing the border on opposite sides. Anything worse than roughly 60/40 on the front is usually a visible defect.
Corners and edges need a magnifier and a raking light: hold the card at an angle to a lamp and the chips and surface marks become obvious, where straight-on they disappear. For surface, tilt the card under a light and look for lines that do not move with the light — those are on the card, not the holder.
- Centring: measure the borders on both axes.
- Corners: magnifier, and compare all four against each other.
- Edges: raking light, look for paper loss along dark borders.
- Surface: tilt under a light and look for fixed lines and indentations.
From condition to grade to price
Grades are not linear in value. The jump from 9 to 10 is usually the largest in the hobby, because 10s are rare and collectors pay for the top of the scale. That is why centring — the attribute that most often prevents a 10 — is worth checking first.
For raw cards, the same logic applies in reverse: a raw card with a visible centring problem is priced well below a well-centred one, and the discount is bigger than most sellers expect.
- The 9-to-10 jump is usually the largest in value.
- Centring is the most common reason a card misses a top grade.
- Raw cards with visible flaws are discounted heavily.
- Record the condition when you scan, so you never re-check a card.
How it works
Three steps from a phone photo to a finished image
Scan the card
Point the camera at it — raw, sleeved, in a binder or in a slab.
Confirm the match
Check the player, year, set and parallel Zenith read.
See the value
The card lands in your collection with a market value attached.
FAQ
Frequently asked questions
What condition factors matter most?
Centring, corners, edges and surface — the same four a grading company assesses. Centring is usually the most heavily weighted, and it is the most common reason an otherwise sharp card misses a top grade.
How do I check a card's condition at home?
Measure the centring against the borders, use a magnifier on the corners, hold the card at an angle to a light to see edge chipping, and tilt it to spot surface lines. Raking light reveals what straight-on light hides.
Why is a grade 10 worth so much more than a 9?
Because 10s are rare. The top of the scale is where collectors compete, and the supply of gem-mint copies is a fraction of the supply of mint ones, so the price difference is disproportionate.
Is a well-centred card always worth more?
A well-centred card in otherwise equal condition is worth more, and centring is the first thing many buyers check. But corners, edges and surface still matter — a perfectly centred card with a soft corner is not a top grade.
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