How to Spot a Fake Slab
Once collectors learned to check cards for authenticity, the counterfeiters moved up a level: fake the case instead. A convincing slab does two jobs for a forger at once — it lends credibility and it stops you inspecting the card directly. Here's how to check one properly.
Why fake slabs exist
The economics are simple. Putting a common card, a damaged card, or an outright counterfeit into a case that says "PSA 10" can multiply an asking price many times over. The higher the value of the card being imitated, the more effort a forger will invest — which is why scrutiny should scale with price.
1. The cert lookup is your primary defence
Every major grader lets you look up a certification number for free on their own website. Do it before you pay, every time, and check that the returned record matches the card, the set and year, and the grade. Two failure modes to watch for: a number that returns nothing at all, and — more devious — a number that returns a real record for a different card. A cloned cert is the most common trick, so match the details, not just the existence of a result. Where the grader shows an image of the graded card, compare it to the listing photos.
2. Read the label like a document
Genuine labels are printed to a consistent standard. Compare a suspect label side by side with a known-genuine one from the same grader and era, and look at font weight and spacing, the alignment of text within the label, colour, and the sharpness of any logo or hologram. Fakes commonly get the typeface subtly wrong, print slightly blurry, or misalign the label inside the case. Anything that looks hand-placed is a serious warning.
3. Inspect the case construction
Authentic slabs are ultrasonically sealed, with clean, uniform seams. Handle or closely photograph the edges: resealed and counterfeit cases often show glue, gaps, ridges, small burn or melt marks, or seams that don't match on both sides. The plastic itself should be optically clear and free of the waviness you often see in cheap moulding. If you have a genuine slab to hand, compare weight and thickness — differences are usually noticeable.
4. Look at how the card sits
Inside a genuine slab the card is held firmly in a well designed for it. A card that has visibly shifted, sits crooked, or has obvious room to move suggests the case was opened and reassembled. Fine dust or debris inside the case is another sign it was tampered with rather than factory-sealed.
5. Read the listing, not just the card
Several patterns should slow you down: a price meaningfully below what that grade normally trades at; photos that are stock images or too low-resolution to read the cert; a seller with little feedback or none on cards; refusal to provide additional photos; and pressure to complete the sale off-platform. Each is survivable on its own; together they're a walk-away.
6. If you suspect a slab you already own
Contact the grading company — they maintain the cert database and take counterfeits seriously. If you bought through a marketplace, open a case promptly; buyer protection schemes have deadlines, and eBay's Authenticity Guarantee applies to many higher-value cards. Don't crack the case first: an intact slab is your evidence.
The underlying habit
Fakes work by making you hurry. The defence is a boring, repeatable routine — verify the cert, read the label, inspect the seams, check the value — that takes a couple of minutes and costs nothing. Knowing the card's real worth is itself part of that routine: a "PSA 10" priced far below where that grade trades is the market telling you something. Our graded buying checklist covers the rest of the pre-purchase run-through.