Catalogue
252 of 655 records previous / next
Marconi Radio Valve Type MT1, by Marconi Company, London, Early 20th Century
Inventory Number: 46376
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.
Notes:
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.
252 of 655 records previous / next
Record mode: Basic | Medium Images | Large Images | Documents (2)