Thanks all duley noted..at the price you are likely to pay, you're better off going for an example in which exclusively positive comments come without hesitation. comments with qualifiers, such as you see here would kick me out of the deal.
Wagriff's comments and reservations are totally sound with respect to the appearance of the metal itself. it is a little odd. as to the marks, i do think i've seen originals marked this way (the two version situation mentioned before), but still his comments are an area for some doubt for me as well. what discussion we have seen here can not rule out the possibility that it is a fake. so in total, Wagriff's comments cut to the heart of the matter: at this level of collecting, uncertainty is not a feature one wants to buy.
without a known expert coming along to dispel all doubts, it's best to wait for a "better" example. and the wait is likely to be long. you're gonna need someone with good and extensive connections to beat the bushes.