Start by comparing the card, label, and certification lookup without opening the slab. Treat the item as unverified until the grading company explains the mismatch. A slab is a sealed card holder with a grading label and certification number. A mismatch may be a simple data error, but it can also indicate a swapped label, altered holder, or counterfeit slab.
Table of Contents
- Identify the Exact Mismatch
- Preserve the Slab and Its Evidence
- Ask the Grading Company to Verify It
- What the Possible Outcomes Mean
- Price the Card Only After Verification
Identify the Exact Mismatch
Enter the certification number on the grading company's official website. Type it manually, including any leading zeros or hyphens, rather than relying only on a QR code. Compare every available field: Some differences are less alarming than others. A missing image or abbreviated set name may reflect an incomplete record.
A lookup showing a different card, grade, or certification status needs an explanation from the grader. Check the physical card carefully as well. Similar Pokémon cards may have the same artwork but come from different sets, languages, or promotional releases. The small collector number near the bottom of the card is usually more useful than the artwork alone.
- Pokémon name and card number
- Set name and printing or variation
- Language
- Holographic or reverse-holographic version
- Grade and grading category
Preserve the Slab and Its Evidence
Do not crack, polish, relabel, or send the slab to a dealer before documenting it. Opening the holder destroys part of the evidence and may prevent the original grading company from evaluating a possible holder problem. Take clear photographs of: Save screenshots of the certification result and note when you checked it.
Database records can be corrected, so the original result may help the grading company understand the report. Also preserve anything inherited with the card, including invoices, submission forms, auction records, emails, sleeves, or storage boxes. These items do not prove authenticity, but they may establish when and how the slab entered the collection.
- The full front and back
- The label from both sides
- The certification number and barcode
- The slab's edges, corners, seams, and surface
- The card's set symbol and collector number
Ask the Grading Company to Verify It
Contact the company named on the label through the support page on its official website. Avoid contact details supplied by a seller, QR-code destination, marketplace listing, or social-media account unless the official site confirms them. Provide the certification number, photographs, and a short description of the discrepancy.
Ask specific questions: Does the number belong to this card and grade? Is the label format consistent with the company's records? Does the slab need an in-person review? The company may correct a database error from photographs, or it may require the slab to be mailed in. Before shipping, confirm the current submission category, packaging rules, declared-value limits, fees, and insurance options directly with the grader. A certification lookup alone cannot authenticate the physical holder. Counterfeiters may copy a real certification number, so a matching database entry is helpful but not conclusive when the slab itself looks suspicious.
What the Possible Outcomes Mean
If the grader confirms a record error, keep the written response with the slab. Ask whether the online entry will change and whether the company recommends a corrected label or reholdering service. If the certification number belongs to another card, stop treating the slab as graded inventory. The problem could involve a labeling mistake, a tampered holder, or a counterfeit; photographs alone may not distinguish among them.
If the company cannot verify the holder, consider an in-person evaluation by a reputable card specialist or submission to the named grader. An informal opinion can guide your next step, but it does not replace authentication by the company represented on the label. Do not sell the card as an authenticated slab while the discrepancy remains unresolved. If you transfer it at all, disclose the exact mismatch and provide the lookup evidence rather than describing the issue as a harmless database glitch.
Price the Card Only After Verification
A slab's market value depends on the card, its authenticity, the assigned grade, and buyer confidence in the holder. A certification mismatch weakens that confidence, even if the enclosed card appears genuine. For a rough baseline, identify the card by set, number, language, and variation. Then compare recent completed sales for the same card in the same verified grade.
Asking prices show seller expectations, not what buyers actually paid. Also compare ungraded copies in similar visible condition. That figure is not a guaranteed minimum because the card may have hidden damage, trimming, alteration, or surface problems that cannot be assessed through the holder. If the expected value is modest, verification fees and insured shipping may exceed the likely benefit. For an apparently valuable card, resolve the certification problem before relying on it for sale, insurance, division of an estate, or a trade.
