McVitie Weston valve collection, Marconi/Genova valve, type 42B
- Made:
- circa 1931
- maker:
- Marconi Company Limited
Marconi/Genova valve, type 42B, marked 1062, glass loose, (RMW/J138B - McVitie Weston number), by Marconi Company Limited, c. 1931.
Marconi/Genova valve, type 42B, marked 1062, glass loose, (RMW/J138B - McVitie Weston number), by Marconi Company Limited, c. 1931.