News

Guides and updates on physics-based card grading.

44 articles total

Calibre
By Calibre · 23 October 2026

Genuine, but a grade 4: how water damage was measured on a French Crystal Lugia

A genuine French Crystal Lugia graded 4. See how four low-angle lights turned its water damage into 49.8 square millimetres of measured surface damage, and how that becomes a grade.

Calibre
By Calibre · 21 October 2026

Card grading for Whatnot, eBay Live and TikTok sellers: back in 7 days

UK card grading for live sellers: £15 a card on a seller account, invoiced monthly, back within 7 days of arriving, with a QR cert buyers can check on stream. How it…

Calibre
By Calibre · 7 October 2026

Card centering explained: how it’s measured, with real examples

Centering is about the borders, not the middle of the card. What numbers like 45/55 mean, three real cards that scored 10, 9 and 8, and how to check your own.

Calibre
By Calibre · 30 September 2026

What’s actually in a CALIBRE report – and how to read it

Every CALIBRE report now shows its full working, not just a number. Where the card’s full measurement trace is available, the report carries the actual charts, the actual photos, and the actual…

Calibre
By Calibre · 29 September 2026

PSA, TAG and Beckett have all paused their cheap tiers – here’s what’s still open

Real backlog numbers from PSA, TAG and Beckett as of 29 September 2026, sourced and dated so you can check them yourself - and where CALIBRE stands: no pause, £25 flat, 7…

Calibre
By Calibre · 29 September 2026

Your first card, graded free

The free first-card offer has ended. Standard grading is £25 a card - return postage always on us.

CALIBRE graded slab label front, showing card name, set, cert number and grade
By Calibre · 10 July 2026

A new label, shaped by you

You sent us feedback in the comments and DMs - bigger grade, clearer cert, full subgrades at a glance. Here is the new CALIBRE label, live on every slab now.

Calibre
By Calibre · 14 June 2026

Why your card scored lower than you expected

“But it looked mint to me.” Cards often score a notch below what their owner expected. Here are the quiet grade-killers - centering, surface marks, soft corners - and why measurement catches…

Calibre
By Calibre · 14 June 2026

The same card should always get the same grade

Crack a CALIBRE card out of its slab, send it back unchanged, and the grade won't budge - because a grade should be a measurement you can repeat, not an opinion that…

Calibre
By Calibre · 13 June 2026

Population reports and scarcity: what really drives a card’s value

Two copies of the same card at the same grade can be worth very different amounts. Here's what a population report is, why scarcity at a grade drives value, and how to…

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