McVitie Weston valve collection, Silica (triode) valve
Silica (triode) valve, large silica triode in a cylindrical metal and ebonite case, 2ft 4in long and 6in diam, electrode system and one filament lead tube damaged, (RMW/J149* - McVitie Weston number), by Unknown maker.
- Electronic Components
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- STC plc
- Permanent collection
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