McVitie Weston valve collection, Mullard valve, type 0.30B
- maker:
- Mullard Limited
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Mullard valve, type 0.30B, marked 81, pinch shaped to give 5 separate outlet tubes for electrode leads and supports, spherical bulb with top pin, (RMW/J26 - McVitie Weston number), by Mullard Limited.
