McVitie Weston valve collection, Marconi valve, type DA100
- maker:
- Marconi Company Limited
Marconi valve, type DA100, marked 24 1090, pinch marked 7103, square black moulded 4-pin base, (RMW/J165 - McVitie Weston number), by Marconi Company Limited.
Marconi valve, type DA100, marked 24 1090, pinch marked 7103, square black moulded 4-pin base, (RMW/J165 - McVitie Weston number), by Marconi Company Limited.