A comprehensive write up Mr V! I've just had a look at it on the Radio Museum site. The metal trim has that distinctive 30's look but the overall shape sort of leans towards the next decade [in my view anyway]. Pre-war sets have that engaging look internally because of the sometimes slightly "Heath Robinson" technology at the time. Well worth all the effort you in put in to this rescue mission. It will be interesting to see how it looks when the cabinet is sorted
Dave W