McVitie Weston valve collection, MOV/GEC valve, type R.10X
MOV/GEC valve, type R.10X, etched 32, (RMW/B87 - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.
MOV/GEC valve, type R.10X, etched 32, (RMW/B87 - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited.