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

maker:
Marconi Osram Valve Company Limited
SMG00237880

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SMG00237880
Science Museum Group
© The Board of Trustees of the Science Museum

Wade Bequest collection of valves: Marconi Osram type N339 radio valve. With B9a base and top cap.

Details

Category:
Collection Unassigned
Object Number:
1972-343/231
credit:
Wade, J.C.F.