Theory Cards Subscribe

Grading

RSS

PSA, CGC and Beckett - how it works and whether it is worth it.

Grading

How a Card Is Encapsulated - and Why the Slab Itself Matters for Resale

Grading is only half the story; the plastic case a card ends up in affects how easily, and for how much, you can sell it on.

Theory Cards ·

Grading

How Sub-Grades Work - and Why Centring Is Usually the Problem

Corners, edges, surface and centring each get their own score before a card's final grade is set, and centring is the one most likely to hold a card back.

Theory Cards ·

Grading

Crossover Grading Explained: Moving a Card Between Grading Companies

Some collectors submit a card already sealed in one company's slab to a rival grader hoping for a better label or a stronger sale price, but the process carries real risks worth understanding first.

Theory Cards ·

Grading

Gem Mint vs Mint: What Actually Separates a 9 from a 10

The gap between a near-perfect card and a perfect one looks tiny to the naked eye but can be worth hundreds of pounds, so here is what graders are really looking at.

Theory Cards ·

Grading

How to Get Your Cards Graded in the UK

A plain-English walkthrough of your grading options in 2026 - CGC's London office, PSA via UK dealers, and domestic UK graders - with the costs, tiers and prep steps you need to know before you post anything.

Theory Cards ·

Grading

PSA vs BGS vs CGC: Which Grading Company Should You Use?

The three major graders, how their scales differ, and how to choose the right slab for your card.

Theory Cards ·

Grading

How Card Grading Works - and When It's Worth It

What actually happens when you send a card to be graded, and how to decide whether the slab will pay for itself.

Theory Cards ·