Thanks for getting back to me, so far I'm starting to lean towards it being real. It is non-magnetic (this eliminates some fakes but not conclusive). It is from the estate of a once very wealthy well traveled 90 something year old women. She traveled a great deal before WW2 before their family lost a great deal during the bombings of London (This too eliminates some possibilities of it being fake). I am currently communicating with CNG, they have requested better pictures with the preliminary belief that it could be authentic. This again adds some hope that it is the real thing.
I am just the holder of the coin for a short time, a friend that is handling the estate has asked me to find out all I can on it, I had never heard of them until this event, hence here I am before the combined knowledge of the Community. It will be possibly a few days but I'll get some better pictures posted.
thanks with respect,
Liverpool