Wade Bequest collection of valves: Marconi radio valve type X81

maker:
Marconi Company Limited
SMG00237775

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SMG00237775
Science Museum Group
© The Board of Trustees of the Science Museum

Wade Bequest collection of valves: Marconi radio valve type X81. With B9g base. Metal valve.

Details

Category:
Collection Unassigned
Object Number:
1972-343/170
credit:
Wade, J.C.F.