[Arran]

Peter;
For a start your DeForest Crosley 6D632 was a 1936-37 model, and I believe it had six tubes, and 3 wave bands, it also looks like it has a tuning light, I don't think they used shadow meters like Philco. Rogers-Majestic had a system of model number codes for their chassis, so even if you had not told me it was a DeForest Crosley model the letter "D" would have told me, as an "R" would have told me it was a Rogers model, or an "M" for Majestic. They are not fun to work on, that set likely has terminal boards under the chassis, and lots of rubber/gutta percha wire to deal with, but the service info does not offer any illustrations of what is on these boards so make lots of notes and diagrams.
The company was founded by a fellow named Edward Samuel Rogers, whom was a pioneer in building AC powered radios, their first model came out in 1925, and had three dials much like an Atwater Kent model 20 would have. What they did is buy a license to produce Kellogg AC tubes in Canada, but they added their own improvements, and developed their own power supply designs. So Rogers founded two companies, Standard Radio Limited, and Rogers Tubes Limited.
Around 1928 Rogers formed a partnership with Grigsby-Grunow to produce, and market Majestic sets in Canada, so there was a lot of joint engineering that was shared between that U.S company, and Rogers, including with tubes. This was how Canadian Majestic came to be, but they produced and marketed sets under both the Rogers name, and the Majestic name. In or around 1932 they bought out DeForest-Crosley, Deforest was originally a Canadian company linked with Lee DeForest, but they were mostly known for producing Crosley radios for the Canadian market, then eventually designing and building their own models, although the latter ones before the Rogers takeover may have used chassis designed by yet another U.S firm, but built under license. I have a Deforest Crosley Trirdyne Special, and it is basically identical to a U.S Crosley Trirdyne, other then the decal under the lid, and the cabinet maybe? https://www.radiomuseum.org/r/deforest_t...ecial.html
The spray shield tubes were something that came out likely in 1931 or 32, and were used in G.G built Majestics, and in Rogers built ones, but there was more divergence near the end where Rogers produced and used more standard type spray shield tubes then the U.S company did. I don't know whether Grigsby-Grunow had it's own tube factory, or contracted someone else to make them, such as Sylvania, in any event they went bankrupt by 1934, and the reorganized Majestic company abandoned the use of spray shield tubes shortly afterward. Anyhow Rogers Tubes Limited kept producing spray shield/metal spray tubes right up until the war ended, and they were even used in their 1942 models in a sort of GT style envelope. They are much better then the ones that Phillips produced in Europe, the coating does not come off of the Rogers tubes, nor do they often lose their ground connections.
Regards
Arran