McVitie Weston valve collection, Tungsram valve, type DD4
Tungsram valve, type DD4, dumpy all metal construction, octal base with one pin missing, (RMW/A38 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Limited.
Tungsram valve, type DD4, dumpy all metal construction, octal base with one pin missing, (RMW/A38 - McVitie Weston number), by Tungsram Electric Lamp Works (Gt. Britain) Limited.