Wade Bequest collection of valves: early R-type triode radio valve

maker:
Allgemeine Elektricitats-Gesellschaft
and
Marconi Osram Valve Company Limited
SMG00237658

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SMG00237658
Science Museum Group
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Wade Bequest collection of valves: early R-type triode radio valve. Spherical bulb with B4-1 ceramic base and top seal.. Marked S375-37. With paper label: W59.

Details

Category:
Electronic Components
Object Number:
1972-343/29
credit:
Wade, J.C.F.