McVitie Weston valve collection, GEC valve, type AT25X2
GEC valve, type AT25X2, marked 21, pinch marked AT25X2-47, (RMW/J86 - McVitie Weston number), by General Electric Company Limited.
GEC valve, type AT25X2, marked 21, pinch marked AT25X2-47, (RMW/J86 - McVitie Weston number), by General Electric Company Limited.