McVitie Weston valve collection, Ken-Rad valve, type VTT-118
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Ken-Rad valve, type VTT-118, mica disc marked Q14
Science Museum Group
© The Board of Trustees of the Science Museum
Ken-Rad valve, type VTT-118, mica disc marked Q14, (RMW/Y693A - McVitie Weston number), by Ken-Rad Tube & Lamp Corporation.
