McVitie Weston valve collection, MOV/GEC valve, type AT.50
MOV/GEC valve, type AT.50, marked 12, pinch marked 3549, (RMW/J100 - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.
MOV/GEC valve, type AT.50, marked 12, pinch marked 3549, (RMW/J100 - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.