A Pokemon card can look cleaner after someone works on it and still become a worse grading candidate. Professional graders distinguish ordinary wear from evidence that a card has been physically or chemically altered.
That matters when buying raw cards and when preparing your own grading submission. This guide explains the issue using current published guidance from PSA and CGC.
What Counts as an Altered Card?
PSA's grading standards list several examples under Altered Stock, including paper restoration, crease or wrinkle pressing, scratch removal, enhanced gloss, and applying foreign substances such as cleaning spray or wax. PSA separately identifies trimming as evidence of alteration during its authentication process.
CGC similarly lists trimming, restoration, power erasing, chemical cleaning, pressing and stain removal as examples that can produce an Evidence of Tampering/Alteration determination. CGC also has a separate Evidence of Color Added designation for artificially improved color.
The practical lesson is simple: do not assume that a treatment is harmless just because it makes a card look better to the naked eye.
Cleaning a Card Can Create a Grading Problem
Collectors sometimes see fingerprints, grime or a surface mark and are tempted to use a cleaner, polish or other substance before grading. That is risky.
PSA explicitly includes cleaning spray and wax among foreign substances associated with altered stock. CGC explicitly names chemical cleaning and stain removal among alteration examples.
For a grading candidate, the conservative approach is to avoid chemical cleaning, polishing, recoloring, pressing or other attempts to improve the card. Inspect the card as it is instead. Our Pokemon card pre-grading checklist covers condition checks you can perform without trying to modify the card.
Alteration Is Different From Ordinary Damage
A scratch, crease, whitening or stain can simply be condition damage. An alteration involves evidence that the card has been intentionally changed or treated.
That distinction is important because graders do more than assign a number based on how attractive a card appears. PSA says authentication comes first; if a card is genuine, its graders also look for evidence of doctoring such as recoloring or trimming before condition grading proceeds.
So a worn but untouched card and a card that someone attempted to improve are not necessarily handled the same way by a grading service.
What Happens If PSA Finds an Alteration?
PSA publishes specific no-grade designations. Its standards identify N5 Altered Stock for alterations such as restoration, pressing, scratch removal, enhanced gloss or foreign substances. PSA states that this designation may qualify for encapsulation as Authentic Altered at the grader's discretion when the submission requests that outcome.
PSA also makes clear that applicable grading fees can still be charged when a card receives a no-grade designation.
Because service policies can change, check PSA's current standards and submission options immediately before sending a card rather than assuming an altered card will receive a numerical grade.
What Happens If CGC Finds an Alteration?
CGC's current Cards We Grade guidance says a card may be returned as Evidence of Tampering/Alteration when graders find evidence or the appearance of alterations such as trimming, restoration, power erasing, chemical cleaning, pressing or stain removal. CGC says the grading fee is charged in this situation.
CGC also notes that its graders determine whether a card receives a numeric grade, an Authentic designation or an Authentic Altered designation. Some special categories have their own rules, so unusual cards should be checked against CGC's current eligibility guidance before submission.
Be Careful With Supposed Printing Errors
A strange feature does not automatically make a Pokemon card a factory error. CGC has documented altered Pokemon cards that were submitted as errors, including Italian Base Set cards where counterfeit 1st Edition symbols had been added to Unlimited cards.
CGC does certify genuine printing errors, but authentication is crucial. If you are considering an unusual raw card, compare it carefully with known genuine examples and be skeptical of a seller's error claim that is not supported by strong evidence.
For broader authenticity checks, see our guide to spotting fake Pokemon cards.
Before You Submit a Pokemon Card
Inspect the card under good lighting and look for signs that it may have been trimmed, recolored, pressed, cleaned or otherwise worked on. If you know a card has been treated, review the grading company's current eligibility rules before paying for a submission.
If the card appears untouched and you decide to grade it, keep it protected rather than trying to improve it. Our PSA packing guide explains how to prepare cards for shipment, and our PSA vs CGC grading-scale guide explains how the companies' numerical grades differ.
Bottom Line
For grading purposes, cleaner-looking does not necessarily mean better. PSA and CGC both identify multiple forms of card doctoring or alteration, including treatments collectors might otherwise mistake for harmless cleanup.
If a Pokemon card is a serious grading candidate, preserve its current state. Do not trim, recolor, chemically clean, polish or press it in an attempt to improve the grade. Let the grading company evaluate the card rather than creating a new authentication problem while trying to fix an old condition problem.