The FAQ page has been updated to answer these 2 concerns. Fair market value will be based on the incorrect (higher) grade. Also, CGC is contacting the owners of impacted books in the CGC Comics Registry to request that they submit the books for Holder Review.
FAQs
What happens when I submit a book for Holder Review?
If your book is determined to be correctly graded, it will be reholdered with a new certification number and returned to you at no charge. If your book is determined to be incorrectly graded, CGC will retain your book as evidence, and you will be compensated for the current fair market value of an accurately graded book at the original incorrect (higher) grade. Fair market value is calculated in accordance with the CGC Guarantee.
How did CGC create the list of impacted books?
Due to the ongoing investigation, at this time we cannot share how we determined which books were impacted.
What changes are being made because of this incident?
CGC is always evaluating ways to make our processes better and our holders more secure. Every reholder submission is now being reviewed by a Senior Grader, and we have made other significant improvements to our processes as a result of this incident. We will continue to take appropriate steps to help ensure that this type of incident does not happen again.
We will make an announcement if we have any new information to share about updates to our processes or holders. However, please understand that some updates will not be made public because they are proprietary and relate to security.
Will the list of impacted certification numbers be retained?
We will retain the list of impacted certification numbers on this page of our website. As impacted books are returned, the certification number will be struck through, indicating it is no longer valid and the book has been given a new certification number. Certification numbers that are no longer valid will not be searchable in the Verify CGC Certification database, consistent with our normal reholder process and to ensure that there is no duplication in the CGC Census population report.
What happens to impacted books in CGC Comics Registry sets?
CGC is contacting the owners of impacted books in the CGC Comics Registry to request that they submit the books for Holder Review.
Books Eligible for Holder Review
Certification numbers with a strikethrough have been submitted for Holder Review.