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ID = 28956
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Tube type:  Triode, vacuum   Power/Output 
Identical to 223A
Similar Tubes
Heater different:
First year 1922 Saga of the Vacuum Tube, Tyne page 292

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Filament If 1.55 Ampere / Direct / Battery =
Description Telephone repeater triode. Filament voltage 4 to 5V; Mu 2.5. Intermediate in power between 104D and 205D. 
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Information source Tube Lore (I)   

uv_triode_tube~~125.png 223A: Fin Stewart
Fin Stewart

Just Qvigstad

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