McVitie Weston valve collection
- Made:
- United States and Canada
- maker:
- Mullard Limited
Mullard valve, type PM3D, external as D45 [/631] but intact, (RMW/D46 - McVitie Weston number), by Mullard Limited.
Mullard valve, type PM3D, external as D45 [/631] but intact, (RMW/D46 - McVitie Weston number), by Mullard Limited.