McVitie Weston valve collection, Marconi valve, type L.S.1
- Made:
- 1924
- maker:
- Marconi Company Limited
Marconi valve, type L.S.1, pinch marked 636-E45B, (RMW/B110 - McVitie Weston number), by Marconi Company Limited, 1924.
Marconi valve, type L.S.1, pinch marked 636-E45B, (RMW/B110 - McVitie Weston number), by Marconi Company Limited, 1924.