Wade Bequest collection of valves: S625 radio valve, by Marconi-Osram

maker:
Marconi Osram Valve Company Limited

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Wade Bequest collection of valves: S625 radio valve, by Marconi-Osram. Early screen grid tetrode with two end caps, one with three pins and the other with two pins. Paper label: W10.

Details

Category:
Collection Unassigned
Object Number:
1972-343/109
credit:
Wade, J.C.F.

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