McVitie Weston valve collection, Mullard valve, type PM5
- maker:
- Mullard Limited
Mullard valve, type PM5, marked E156, (RMW/D49 - McVitie Weston number), by Mullard Limited.
Mullard valve, type PM5, marked E156, (RMW/D49 - McVitie Weston number), by Mullard Limited.