[Arran]

Thank you for the information about the Grimes line of radios. Mine is a Serenader. Interesting that they built models for sale by different retail stores like Colonial did for Sears, etc......

On the schematic the Phenola, Serenader, Viking, Minerva, and Arcadia brand names are listed. Now it makes more sense.

I forgot about the Minerva brand (not to be confused with the American metal cabinet troop radios), I've only seen one of those from maybe 1940. What I haven't figured out is who sold the Minerva line of sets, I do know that they date back to the late 1920s but still haven't found out what dealer network they had. There were a few others names that Grimes-Phonola/Electrohome manufactured, Dictator and Baycrest were sold by the Hudson's Bay Company, and there was another called "Lindsey-Airline" which had no connection to Monty Ward. After the war Dominion Electrohome dropped the Phonola brand name from their products and simply called them "Electrohome". These were all manufactured in the Kitchener area of Ontario.
A lot of Americans can't fathom that Canada did have it's own home grown radio industry and didn't simply import US made sets. However because the market had different tastes even the Canadian divisions of American manufacturers like RCA, G.E and even Philco designed and manufactured a lot of Canada only models or models like your Philco 334 that used the same chassis in a different styled cabinet. I suspect that a lot of the parts supplied to the British Philco company may have been supplied by the factory in Toronto due to the favorable trading relationship Canada had with Britain at the time.
Regards
Arran