McVitie Weston valve collection, Mullard valve, type CY31
- maker:
- Mullard Limited
Mullard valve, type CY31, marked W6024 1006 BY, (RMW/Y480 - McVitie Weston number), by Mullard Limited.
Mullard valve, type CY31, marked W6024 1006 BY, (RMW/Y480 - McVitie Weston number), by Mullard Limited.