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ID = 35349
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Tube type:  High Voltage Half-Wave Mercury-Vapor Rec 
Identical to 255B
Similar Tubes
Normally replaceable-slightly different:

Filament Vf 5 Volts / If 19 Ampere / Direct
Description 20KV PIV, 2A average current. T41 glass body with ceramic ringed top cap and two filament pins. Oxide covered filament. Redesigned version of 255A, with reduced filament current drain.
Also made by Amperex. 
Information source Tube Lore (I)   
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2b_1.png 255B
Emilio Ciardiello


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