McVitie Weston valve collection, Mullard valve, type VR91
- maker:
- Mullard Limited
Mullard valve, type VR91, base marked 55 11 MPA, (RMW/Y610A - McVitie Weston number), by Mullard Limited.
Mullard valve, type VR91, base marked 55 11 MPA, (RMW/Y610A - McVitie Weston number), by Mullard Limited.