
McVitie Weston valve collection, BTH valve, type A.T.40


BTH valve, type A.T.40, marked 11376 phosphorous gettered, (RMW/J94 - McVitie Weston number), by British Thomson-Houston Company Limited.
BTH valve, type A.T.40, marked 11376 phosphorous gettered, (RMW/J94 - McVitie Weston number), by British Thomson-Houston Company Limited.