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McVitie Weston valve collection, Mullard valve, type S4VA
- maker:
- Mullard Limited
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Mullard valve, type S4VA, metallising largely missing, (RMW/G88B - McVitie Weston number), by Mullard Limited.
Mullard valve, type S4VA, metallising largely missing, (RMW/G88B - McVitie Weston number), by Mullard Limited.