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ID = 28504
Great Britain (UK)
Brand: Economic Electric; London
Tube type:  Triode, vacuum   Universal 
Identical to Dex376 = Dex306
First year 1926 Saga of the Vacuum Tube, Tyne Seite 388

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 3 Volts / If 0.06 Ampere / Direct / Battery =
Description In Tyne obviously erroneous name Dex376, which is against the code used (first digit = voltage; second and third digit = current as right of a virtual decimal point. i.e. 306 = 3 volts, 0.06 amp; 440 = 4 volts, 0.40 amp).
Correct name is Dex306. 

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