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ID = 31692
United States of America (USA)
Tube type:  Triode, vacuum   Universal 
Identical to 201A_UV-base = UV201A = C_Radex = P.V.F.301-A

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Filament Vf 5 Volts / If 0.25 Ampere / Direct / Battery =

Some manufacturers and distributors used the term 201A for tubes having UV base, e.g. ARION or MOZART and probably the same Cunningham with the mark 'Audiotron'.
Later 201A was understood as a general name for the UX201A, even shorter '01A'.

Tube prices 1 Tube prices (visible for members only)
Literature -- Collector info (Sammler)   
Saga of the Vacuumtube, Tyne   pp.351 through 365
201A_UV-base: Vonarburg Albert
Albert Vonarburg

201A_UV-base: KoBi
Konrad Birkner † 12.08.2014

201A_UV-base: KoBi
Konrad Birkner † 12.08.2014

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