[Arran]

Ron;
  That grille cloth may in fact be original, since this is a Model 39 built in Toronto it means that they did not follow everything that they did in Philadelphia 100%, as you well know. In some ways that's a good thing, like using cloth covered rather then that notorious rubber/gutta percha covered wire, and a power transformer with a proper 5 volt rectifier winding and a #80 tube rather then an 84. No doubt this was related to what Philco Products of Canada Ltd. could acquire from domestic suppliers, or it was simply the prerogative of the engineering department in Toronto, or perhaps both. It was also 1940-41, Canada entered the war in October 1939, though they did not cut off car or radio production until February or March of 1941, but that may have had something to do with what parts were chosen as well. But then again the Toronto people probably had more leeway with redesigning a set like this since intended to be a Canada only model, and it's Tropic cousins were intended to be export only models. That grille cloth looks familiar, so I may have seen in in some other sets from the late 1930s or early 40s, it may not be the same pattern of cloth the 41-722s used but it is likely from that period. The model 39, as well as several other Canada only Philco models, is one set I will need to keep a watch open for.
Regards
Arran