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Marconi Radio Valve, by Marconiphone Company, England, 1920s/1930s

Inventory Number: 87176

87176-1t 87176-2t

Date: 1920s/1930s

Maker Details: Signed by the Marconiphone Co. Ltd.

Inscription: "THE MARCONIPHONE CO LTD / MARCONI / B.V.A." printed on transfer attached to exterior surface of bulb.

Size: 110 mm in overall length (including base pins)

Materials: Glass, steel, plastic?, assorted metals.


Marconi Radio Valve in glass balloon envelope with partially silvered lower surface, probably from manufacturing process. With polished black plastic? base and six steel base pins. One base pin missing. Marconiphone Co. Ltd. was founded in December 1923 so valve can be dated post-1923.

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