We may have talked this one to death but I wonder how eBay's Authenticity Guarantee, specifically for PSA graded cards, factors into this whole confusion with PSA's Reholder service apparent vulnerabilities.
Per eBay
https://pages.ebay.com/authenticity-...-tradingcards/:
For graded cards, a PSA authenticator will verify that the case and label are authentic to the grade and check for any tampering and verify that the case and label are authentic to the grader. Cards will not be regraded.
Per the Terms and Conditions:
Description of the Authenticity Guarantee Service.
After the purchase of an Eligible Item (description in Section 5(a) below) on eBay.com, the item is shipped to a vetted third-party authentication partner (“Authentication Partner”) to carefully inspect the item for authenticity and accuracy against the item listing. Upon confirmation of the item by the third-party authentication partner, it is properly packaged and securely shipped to the buyer. If the item’s authenticity cannot be verified or the item is significantly not as described, the item is returned to the seller and a refund is issued to the buyer.
AUTHENTICITY GUARANTEE FOR TRADING CARDS DOES NOT INCLUDE GRADING SERVICES.
If the item condition or any other aspect of the trading card does not match the listing, the trading card will be returned from the Authentication Partner to the seller, with the purchase canceled and payment price returned to the buyer. By listing for sale or purchasing an Eligible Item, you acknowledge and agree that the Eligible Item will be sent to the Authentication Partner to perform the Services. More information about the Authentication Partner and Services may be found here (This is a link to the FAQ).
And under the FAQ:
What happens at the authenticator?
For graded cards, this involves inspecting the sealed plastic holder for signs of tampering and verifying that the case and label are authentic to the grader. Then they confirm the item is consistent with the listing title, images, and listing description.
Who is authenticating the cards?
For graded cards, Professional Sports Authenticator (PSA) is authenticating the sealed plastic holder, not the underlying card.