McVitie Weston valve collection
- Made:
- United States and Canada
- maker:
- Mullard Limited
Mullard HF triode valve, type D.3, B4 base, marked K225, (RMW/D32A - McVitie Weston number), by Mullard Limited.
Mullard HF triode valve, type D.3, B4 base, marked K225, (RMW/D32A - McVitie Weston number), by Mullard Limited.