McVitie Weston valve collection
- Made:
- United States and Canada
- maker:
- A C Cossor Limited
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LicenseCossor AF triode valve, type 210 L.F
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Cossor AF triode valve, type 210 L.F., B4 base, with black printed label and vertical electrode assembly (RMW/D17 - McVitie Weston number), by A C Cossor Limited.
