McVitie Weston valve collection, BTH valve, type B.5.
- Made:
- 1923
BTH valve, type B.5., (RMW/C71 - McVitie Weston number), by British Thomson-Houston Company Limited, 1923.
BTH valve, type B.5., (RMW/C71 - McVitie Weston number), by British Thomson-Houston Company Limited, 1923.