Strange ... 984.116 is really a number belonging to a batch of Ontario M3s (984.001 - 200) , made in 1959... not even one of the first batches (first Canadian M3 are of 1955). Lager displays a 916.xxx, with the standard engraving "Midland - Ontario".
So the Wetzlar engraving is really an oddity... but looking at Ebay pics, seems to me the engraving "M3 - 984.116" is not so fine... a direct control would be mandatory (comes from Italy, but I'm far from the location
). Top plates of Ms are easily available as "spares"... the Canadian M3, though produced in numbers (7000 ca.) is undoubtly valued more than Wetzlars... could be an easy game to play...
Anyway, the whole tone of the annoucement sounds not so good... "only 200 produced"... that's false, even for the year 1959 only (1150 Canadian M3s in that year), it's simply belonging to a production batch of 200 items... nothing strange; and the top evidence to the fact that Leitz, before M3, had produced cameras only in screw mount ! Any decent Leiciste knows well that M3 was the first BM Leica... seems an announcement for semi idiots...
I never buy on ebay, and do not know the bidding rules., surely the "buy it now" is at all exaggerate a price.