McVitie Weston valve collection, Dario valve
Dario valve, pinch marked B, black moulded and milled 4-pin base, (RMW/E45B - McVitie Weston number), by Societe Francaise Radioelectrique.
Dario valve, pinch marked B, black moulded and milled 4-pin base, (RMW/E45B - McVitie Weston number), by Societe Francaise Radioelectrique.