McVitie Weston valve collection, Ediswan valve, type N.T.16
Ediswan valve, type N.T.16, marked - Admiralty patt. 7432, serial No. 105, pinch marked N.T.16 and No.10, (RMW/J55 - McVitie Weston number), by Royal Ediswan.
Ediswan valve, type N.T.16, marked - Admiralty patt. 7432, serial No. 105, pinch marked N.T.16 and No.10, (RMW/J55 - McVitie Weston number), by Royal Ediswan.