McVitie Weston valve collection, BTH Tungar valve
- Made:
- 1930
BTH Tungar valve, marked 548, (RMW/A182 - McVitie Weston number), by British Thomson-Houston Company Limited, 1930.
BTH Tungar valve, marked 548, (RMW/A182 - McVitie Weston number), by British Thomson-Houston Company Limited, 1930.