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UK card grading · Pokémon & LorcanaMeasured, not judged.

Not an opinion.
Not an algorithm.
A measurement.

Every CALIBRE grade is a physical measurement of your card, checked against a number we publish — so you can verify it, not just trust it. £25 a card. Back in 7 days. UK.

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Insured to £5,000 in our care· Tracked & insured return· UK-based· Capture fault? We re-run it free
The difference, in one look

Three ways to grade a card. Only one you can check.

Human graders
AI graders
CALIBRE
How the grade is decided
An opinion
A prediction
A measurement
Can you check it yourself?
No
No — trust the model
Yes — every number, published ✓
Does the standard ever change?
The rubric drifts
The model gets retrained
Published thresholds, fixed ✓
Back in
90 working days
45 working days
7 days

Comparison based on graders' published standard-tier turnarounds and methods, August 2026. Faster express tiers exist across the market.

7days
Start to sealed slab — not weeks.
£25
Flat, per card. No value-based upcharge.
Published
Every threshold behind your grade. See the numbers →
See the measurement

Click a score.
See how we got it.

Had a holo dinged for “surface”? We measure the surface itself — so your foil reads as artwork, not damage.

No rubric to trust, no model to take on faith. Every grade opens to the measured values and the line each one had to clear. If a number looks wrong, you'll see it.

Browse real reports in the registry →
Jolteon exPrismatic Evolutions · No. 30 · CLBR-0000289
9.5
Overall grade = the lowest of the four subgrades — the bottleneck, never an average. Here, corners set it at 9.5.
Centering10.0 ✓
Measured 51 / 49 left-right, 50 / 50 top-bottom. A 10 needs both axes at 51 / 49 or tighter — 1% off-centre, inclusive. This card sits exactly on the line, so it earns the 10.
Corners9.5 ✓
Three corners scored a perfect 100 / 100; the bottom-left 95 / 100 on our 0–100 corner-sharpness scale — a hair of wear. That's the 9.5, not a guess.
Edges10.0 ✓
No edge whitening measured — 0.00 mm on all four edges.
Surface9.8 ✓
One micro-mark measured at 1.3 mm on the foil — the holo pattern itself read as artwork, not damage.
This is a real grade — verify every number yourself →
Before you send a thing

Don't take our word for it.

Photograph a card and get a free centering read in seconds — a real taste of the measurement. No account, no card sent.

Run a free pre-check →
An indicative centering read from your photo. The full physical grade — surface, corners, edges — needs your card on the instrument.
Simple pricing

Two ways in.

Most popular
Grade my cards
£25 /card
+ £5.95 tracked, insured return per order
Full measured report — centering, corners, edges, surface — a serialised, tamper-evident slab, and a record anyone can verify. Back in 7 days.
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Just need to know it's genuine? £5 card authentication with an online proof certificate — launching soon.
Keep it ungraded
Seal only
£8 /card
+ £5.95 tracked, insured return per order
For a signed card, or one you’re not ready to grade yet: sealed in the same serialised, tamper-evident slab, with a verifiable record. Back in 7 days.
Seal my card →

Flat pricing, whatever the card's worth. Return postage is one charge per order, not per card.

Tony Hensler, founder of CALIBRE
Tony Hensler
Founder

“I built CALIBRE because a grade you can't check is just an opinion with a number on it. We publish every measurement behind the grade, so you can verify it yourself — on any card we grade.”