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Help document grading and attribution inconsistencies
About TPGAudit
TPGAudit documents observable grading, attribution, labeling, and holder-integrity inconsistencies in third-party numismatic encapsulation. The database is built on verifiable evidence and maintained to a consistent editorial standard.
If you have encountered a documented inconsistency in a graded coin holder, you are invited to submit it for review and potential inclusion.
What We Accept
- Observable errors supported by photographic or slab evidence
- Objectively identifiable inconsistencies (attribution, labeling, denomination, date, holder integrity)
- Cases involving any third-party grading service (NGC, PCGS, ANACS, ICG, or others)
What We Do Not Accept
- Grading opinion disputes — disagreements about numeric grade assignment
- Unverifiable or secondhand reports
- Speculative claims or hearsay
- Submissions containing defamatory, accusatory, or inflammatory language
Submission Guidelines
- Include a clear photo of the slab label (front of holder)
- Include obverse and reverse coin images if possible
- Certification number is required or strongly preferred
- Describe what the label says versus what the coin appears to be
- Anonymous submissions are accepted, but providing an email address helps with follow-up and verification
All submissions are reviewed before inclusion. Accepted cases are documented using qualified language and assigned a severity and classification consistent with the published methodology.
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If you know collectors, dealers, or numismatic professionals who may have encountered grading inconsistencies, the messages below can be shared directly.