McVitie Weston valve collection, Mullard valve, type EF6
- Made:
- 1939
- maker:
- Mullard Limited
Mullard valve, type EF6, red painted envelope marked SAMPLE, (RMW/Y236 - McVitie Weston number), by Mullard Limited, 1939.
Mullard valve, type EF6, red painted envelope marked SAMPLE, (RMW/Y236 - McVitie Weston number), by Mullard Limited, 1939.