McVitie Weston valve collection, STC valve, type CV53 (2 off)
STC valve, type CV53 (2 off), mounted on single metal holder, (RMW/Y713 - McVitie Weston number), by Standard Telephones and Cables Limited.
STC valve, type CV53 (2 off), mounted on single metal holder, (RMW/Y713 - McVitie Weston number), by Standard Telephones and Cables Limited.