McVitie Weston valve collection, GEC valve, type AT40
GEC valve, type AT40, marked 15, pinch marked AT40-73, (RMW/J95 - McVitie Weston number), by General Electric Company Limited.
GEC valve, type AT40, marked 15, pinch marked AT40-73, (RMW/J95 - McVitie Weston number), by General Electric Company Limited.