McVitie Weston valve collection, Mullard valve, type A.R.
- maker:
- Mullard Limited
Mullard valve, type A.R., etched 2246, (RMW/C4 - McVitie Weston number), by Mullard Limited.
Mullard valve, type A.R., etched 2246, (RMW/C4 - McVitie Weston number), by Mullard Limited.