ok...I think I understand the problem better...............first I am no expert on old stuff.....my interest is in Elizabeth II primarily.
as I read Marsh, now that I think I understand your question, it is more complex than I thought and you have just cause to question...I was certainly wrong and incomplete in what I wrote.
if you have received the graded coin, did it have research documentation in the package...??? if not, and you want to pursue this, you can provide more documentation and challenge the certification(I have had to do it twice and now have a third to send for reconsideration).
am I right that the worth of the coin is at stake...an S or an R2...???
I guess I am, in the end, no help..............I look forward to the resolution.
Eric at drake sterling in australia is pretty good with sovereign problems.
again, sorry for underestimating the problem.
Brian