Wade Bequest collection of valves: four-electrode radio valve by Marconi-Osram

Made:
1920
maker:
Marconi Osram Valve Company Limited
SMG00237651

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SMG00237651
Science Museum Group
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Wade Bequest collection of valves: four-electrode radio valve by Marconi-Osram, possibly FE1 or FE2. With three side caps and two caps. With paper label: 1920.

Details

Category:
Collection Unassigned
Object Number:
1972-343/20
credit:
Wade, J.C.F.