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ID = 35040
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Tube type:  Double Triode 
Identical to 420A_WE = 5755

Base Noval, 9 pin miniature (USA pico-9) B9A
Filament Vf 12.6 Volts / If 0.18 Ampere / Indirect
Description High-stability dual triode, intended for DC amplifiers; mu 70, Gm 0.5mS. Center tapped heater, can be connected for 6.3V, 360mA operation. 
Information source Tube Lore (I)   

420a_we_so.png 420A_WE: rtt
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