McVitie Weston valve collection, Cosmos valve, type S.P.18 (Green spot)
- Made:
- circa 1926
Cosmos valve, type S.P.18 (Green spot), marked 1.8v 0.09A, (RMW/C121 - McVitie Weston number), by Metropolitan-Vickers Electrical Company Limited, c. 1926.
Cosmos valve, type S.P.18 (Green spot), marked 1.8v 0.09A, (RMW/C121 - McVitie Weston number), by Metropolitan-Vickers Electrical Company Limited, c. 1926.