Wade Bequest: DER triode radio valve

PART OF:: Wade Bequest collection of valves

Made:: England

maker:: Marconi Osram Valve Company Limited

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Wade Bequest collection of valves: DER triode radio valve, by Marconi-Osram. Early dull emitter triode valve. With BBC stamp and serial number 11499. With B4-3 base and top seal. Paper label: W17.

Details

Category:: Electronic Components

Object Number:: 1972-343/104

type:: triode valve

credit:: Wade, J.C.F.

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Wade Bequest: DER triode radio valve

Details

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