McVitie Weston valve collection, Vita valve, type TP3
Vita valve, type TP3, marked 595, (RMW/E23 - McVitie Weston number), by United Incandescent Lamp and Electric Company.
Vita valve, type TP3, marked 595, (RMW/E23 - McVitie Weston number), by United Incandescent Lamp and Electric Company.