Eric Strasen
Forum Participant

American Bosch, AKA United American Bosch and American Bosch Magneto Corporation, marketed an entry level AA-5 set in the late 1930’s, apparently aimed at Nazis belonging to the German-American Bund, with swastikas on the radio’s two knobs. These knobs disappeared after Germany declared war on the US. But forgive and forget, I guess, because a few collectors are looking for them now. Good luck finding any!
As far as spray-shield tubes go, Grigsby-Grunow marketed them in pre-octal days and used them in their “Smart Set” Majestic radios of the early 1930’s. There are still a lot of these floating around, most of which are losing their coating and darn near all are microphonic as all get out (from my sad experience).