McVitie Weston valve collection, STC valve, type V.T. No.81
STC valve, type V.T. No.81, marked 1296, glass loose, pinch marked K2605A, (RMW/E168 - McVitie Weston number), by Standard Telephones and Cables Limited.
STC valve, type V.T. No.81, marked 1296, glass loose, pinch marked K2605A, (RMW/E168 - McVitie Weston number), by Standard Telephones and Cables Limited.