McVitie Weston valve collection, Royal Ediswan valve, type AR
Royal Ediswan valve, type AR, uncapped, serial no. 24724, (RMW/C8 - McVitie Weston number), by Royal Ediswan.
Royal Ediswan valve, type AR, uncapped, serial no. 24724, (RMW/C8 - McVitie Weston number), by Royal Ediswan.