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McVitie Weston valve collection
- Made:
- 1939
- maker:
- Mullard Limited
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Mullard octode frequency changer valve, type EK2, Ct8+tc base, red painted envelope marked 'SAMPLE', (RMW/Y237 - McVitie Weston number), by Mullard Limited, 1939.
Mullard octode frequency changer valve, type EK2, Ct8+tc base, red painted envelope marked 'SAMPLE', (RMW/Y237 - McVitie Weston number), by Mullard Limited, 1939.