Quote:
Originally Posted by AdrianH
Doing a quick search on the wireless history web site Etherplus valve holders were made by M and A Wolfe of 9 to 15, Whitecross Street, London E.C.1.
Adrian
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Which became "MANDAW Co Ltd" by about 1930.
https://www.gracesguide.co.uk/Mandaw_Co
Which dates it to the mid to late 20s, which is completely consistent with the style of box.
A look through the online literature of the time shows they were also making inter-stage transformers
https://worldradiohistory.com/UK/Pop...2-12-S-OCR.pdf
and variable capacitors
https://worldradiohistory.com/UK/Wir...5-12-S-OCR.pdf
as well as valve holders. So it is entirely possible they branched into kits or complete radios.