I'm inclined to believe the coin genuine. This seller, although not adding up bunches of Feedback, has been selling coins on ebay since 1999. This one's the most expensive he's offering currently, but not by much and most of it is stuff that's way out of my range.
My guess is the GN code is an administrative error - this one's been cleaned.
My guess is the GN code is an administrative error - this one's been cleaned.



















