My guess is Prohibition-era, a lot of Canadian whisky bottles were smuggled down in to the US by bootleggers and the base looks right for that era. So it's old, but not old old.
We only had country-wide prohibition between 1918 and 1920, but every province had it in effect for different time periods, mostly in the 1910s and 20s. Ontario, where most of Canada's whisky was produced, had prohibition from 1916 to 1927, but distilleries were still allowed to produce liquor for the "export market" (aka American bootleggers). And we never had the "Federal Law" statement or anything like that.Was there ever Prohibition in Canada ? thought I heard it started in 1927 there? Did Canada ever put that Federal Law Forbids statement thing on there Bottles like the US did?