McVitie Weston valve collection, Cosmos valve, type A.C/X
Cosmos valve, type A.C/X, marked short path, (RMW/F22 - McVitie Weston number), by Metropolitan-Vickers Electrical Company Limited.
Cosmos valve, type A.C/X, marked short path, (RMW/F22 - McVitie Weston number), by Metropolitan-Vickers Electrical Company Limited.