McVitie Weston valve collection, Marconi valve, type KL1
- maker:
- Marconi Company Limited
Marconi valve, type KL1, pinch marked L, 4-pin base, with side terminal, (RMW/F1 - McVitie Weston number), by Marconi Company Limited.
Marconi valve, type KL1, pinch marked L, 4-pin base, with side terminal, (RMW/F1 - McVitie Weston number), by Marconi Company Limited.