I’m not at all familiar with those coins, but my guess is MS63. That’s due to the discoloration on the cheek and neck, the marks on the lower right part of the neck and upper left portion of the cap, the marks beneath and to the left of the rooster, the marks on the left wing and the marks behind its neck and head. That said, the pictures aren’t very clear. And for all I know, the coin could have rub/be AU and/or have altered surfaces.
Regardless of how it was graded by PCGS, NGC or anyone else, that says nothing about the validity of the thread originator’s complaints.