Just can't find a lot about the over date. I want a copy of Allan Schein's book but don't have one, not sure if that would help or not. I'm guessing NGC didn't give it the designation?
No they did not. I looked at Heritage records and note that they in 2016 sold a 13/2 in NGC 64 that did not have IMHO as much evidence of overdate. I will try to post later today.