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ID = 19357
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Developer: Fleming - valves; GB 
Tube type:  SINGLE-DIODE-TUBE (no details yet)   Detector 
  <1925 very rare. ***
Identical to Fleming_Oscillation
Similar Tubes
Other base:
First year 1906 -- Collector info (Sammler)
First Source (s)
1906 : Saga of the Vacuum Tube, Tyne Picture page 47

Base Edison medium E14 = 14 mm, mignon Sidecontact.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.6 Ampere / Direct / Battery =

Etched with: Royal Ediswan, below "Fleming Oscillation Valve", below 4 Volts. The Fleming valves were made by the Edison and Swan United Electric Light Co. and marketed by Marconi Wireless telegraph Co. Ltd. Ref. Catalogue Marconi Wireless Telegraph Co, about 1910. The catalogue number is 134R. The tube has a tungsten filament

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
42 x 82 x 32 mm / 1.65 x 3.23 x 1.26 inch
Weight 16 g / 0.56 oz
Information source British Radio Valves - The Vintage Years, Thrower   p. 10
Peter den Boer
Fleming_Oscillation: EE
Ernst Erb

Fleming_Oscillation: own collection
Peter den Boer

from Just Qvigstad

Usage in Models 1= 1912?? ; 1= 1913??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):2

Collection of a member from D

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