McVitie Weston valve collection
- Made:
- 1932 in United States
- maker:
- Osram
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LicenseOsram output triode valve, type PX25, B4 base
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© The Board of Trustees of the Science Museum
Osram output triode valve, type PX25, B4 base, (RMW/C58 - McVitie Weston number), by Osram, 1932.
