Wade Bequest collection of valves: type N339 radio valve, by Marconi-Osram

SMG00237815

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SMG00237815
Science Museum Group
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Wade Bequest collection of valves: type N339 radio valve, by Marconi-Osram. With B9a base and top cap.

Details

Category:
Electronic Components
Object Number:
1972-343/212
credit:
Wade, J.C.F.