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Marconi Radio Valve Type MT1, by Marconi Company, London, Early 20th Century

Inventory Number: 46376

46376-2t 46376-1t

Date: Early 20th Century

Maker Details: Signed by Marconi-Osram Valve Co. Ltd.

Inscription: "MARCONI OSRAM VALVE / MADE AT THE OSRAM LAMP WORKS/ COVERED BY VARIOUS PATENTS / MADE IN ENGLAND / M" printed on exterior surface of bulb. "_.T.1 / 1" printed on exterior surface of bulb.

Size: 250 mm in overall length (including electrodes)

Materials: Glass, nickel, assorted metals.

Other Given Number(s): Christie's 208.


Marconi Transmitting-Type Radio Valve (or Tube) Type MT1, with large glass bulb, nickel-plated interior filaments and anodes, and lacking base. With three jewellry-like electrodes protruding from the lower section of the bulb and a single jewellry-like electrode protruding from the upper section of the bulb.

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