McVitie Weston valve collection, Ediswan valve, type ES220 One-Der
- Made:
- 1927
Ediswan valve, type ES220 One-Der, marked 1827, (RMW/H20A - McVitie Weston number), by Royal Ediswan, 1927.
Ediswan valve, type ES220 One-Der, marked 1827, (RMW/H20A - McVitie Weston number), by Royal Ediswan, 1927.