McVitie Weston valve collection, Marconi valve, type D.E.H. 610
- Made:
- 1927
- maker:
- Marconi Company Limited
Marconi valve, type D.E.H. 610, (RMW/C42 - McVitie Weston number), by Marconi Company Limited, 1927.
Marconi valve, type D.E.H. 610, (RMW/C42 - McVitie Weston number), by Marconi Company Limited, 1927.