McVitie Weston valve collection, MOV/GEC valve, type G.P.O. No 6
MOV/GEC valve, type G.P.O. No 6, marked 111, pinch marked 1202, (RMW/E127 - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.
MOV/GEC valve, type G.P.O. No 6, marked 111, pinch marked 1202, (RMW/E127 - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.