McVitie Weston valve collection
- Made:
- 1936-1961
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LicenseSTC triode valve, type 3B/241M, B8B base
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STC triode valve, type 3B/241M, B8B base, (RMW/Y299 - McVitie Weston number), by Standard Telephones and Cables Limited, 1936-1961.
