McVitie Weston valve collection, Mullard valve, type D.F.A.3.
- maker:
- Mullard Limited
Mullard valve, type D.F.A.3., painted A165, (RMW/D57 - McVitie Weston number), by Mullard Limited.
Mullard valve, type D.F.A.3., painted A165, (RMW/D57 - McVitie Weston number), by Mullard Limited.