[Arran]

I believe that radio production was halted somewhat later then auto production, in the U.S and Canada, which was in February 1942 for autos. There were some exceptions, such as the two Philco models built with surplus Chrysler and Ford car radios, I think that those were produced in the spring of 1942. Is it a war time set? Well if it was produced after December, 7, 1941, and is a U.S model, then yes. If it was a Canadian model produced after September, 10, 1939, then it would also be a war time model. So late production 1942 models are War time sets in the U.S, and 1940, 1941, and 1942 models in Canada are all war time sets. As for the speaker, I think that you have many choices, I don't think that there was much variation among Philco speakers of a given size in their higher end models.
Regards
Arran