I would bet, esp. given the age, that ANACS of the time had no leg to stand on.
When you submit a coin, there is a legal contract involved. For our hosts it's right here: https://www.ngccoin.com/legal/terms-and-conditions/
3. Customer represents and warrants that it has no knowledge and no reasonable basis for belief that any collectible submitted is not genuine or contains any non-disclosed alterations or restorations, including, but not limited to, trimming, re-coloring, bleaching, power erasing, re-backing, artificially toning, applying or removing punches or stamps, or any other method used to change or enhance the appearance, condition, or content of a collectible (collectively “Tampering” or “Tampered”). Customer acknowledges that Tampering is wrongful and violations of this Section 3 shall entitle Company to compensatory damages and injunctive relief, as appropriate.
18. Customer agrees to return to a Company, at the Company’s expense, any collectible bearing a clerical error made by the Company. A Company will, at its expense, correct the clerical error and return the corrected collectible to Customer. Customer agrees to indemnify, defend and hold Releasees harmless from and against all claims, liabilities and expenses (including reasonable attorneys’ fees) relating to or arising directly or indirectly from Customer’s failure to comply with this Section 18.
19. In the event a collectible submitted by Customer is determined, at any time, to be not genuine or to have been Tampered with, Customer shall provide reasonable cooperation to Company and to any subsequent owner of such collectible, including the reversal of any sales transaction involving Customer and such subsequent owner or intermediate purchaser or transferee.
Anyone have the T&Cs from ANACS in 1973????