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ID = 22578
Great Britain (UK)
Brand: Cossor, A.C.; London
Developer: Cossor, A.C.; London 
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to StentorTwo = 210P = 215P
First Source (s)
03.Nov.1926 : -- Original prospect or advert
1926 : Saga of the Vacuum Tube, Tyne p.376
Successor Tubes 210P  

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 1.8 Volts / If 0.2 Ampere / Direct / Battery =

Data on the tube label states 1.8V at 0.2A rather than 0.15A and "Maximum Anode Volts 110."

Manufacturer's advertisment of 1926 makes much of the 0.15A current specification, however production tubes seem to admit that 0.2A is closer to reality.

Dimensions (WHD)
incl. pins / tip
43 x 115 x mm / 1.69 x 4.53 x inch
Weight 37 g / 1.31 oz
Information source History of the British Radio Valve to 1940   Pages 38, & 145

stentortwo_so.png StentorTwo: rtt
Anonymous 10 Collector

Just Qvigstad
Usage in Models 1= 1925

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of



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