The only vintage 1911's produced in Canada were the some ~ 100 examples produced by North American Arms in Quebec circa 1918 in a workup to a full production contract that was subsequently cancelled.
For Canadian collectors, the NAA 1911 is somewhat of a 'holy grail' of the early 1911 model world. The Yanks usually aren't too hepped on them as they will say generally they never saw actual service. There actually was one on the EE here in the past couple of years with a $20K asking price.
Had WWI gone into 1919 or 1920 we likely would've seen GI 1911's produced in full production by NAA, as well as makers like Winchester on this continent and the likes of FN Browning in Europe. Anyway, I digress....
Or did you mean to say, the example you saw at the Nanaimo show was one of the ~ 5,000 Colt produced Government [commercial] models that Canada purchased for WWI issue?
Geez, I gotta get up to that Nanaimo show next time.....
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NAA.