McVitie Weston valve collection
- Made:
- 1924 in United States
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LicenseMOV triode, type R.5V, B4 base, etched D9356
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MOV triode, type R.5V, B4 base, etched D9356, glass envelope loose, (RMW/B96 - McVitie Weston number), by Marconi Osram Valve Company Limited, 1924.
