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ID = 19500
Brand: Métal; France (tubes)
Tube type:  Triode, vacuum   Universal 
  <1925 rare.
Identical to MicroMetal

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 4 Volts / If 0.06 Ampere / Direct / Battery =
Description eine Ausführung mit Porzellanfuss ist für Wechselstromheizung(direkt) 
MicroMetal: KoBi
Konrad Birkner † 12.08.2014

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MicroMetal: KoBi
Konrad Birkner † 12.08.2014

MicroMetal: Radio Valvulas Maymó
Jesus Maria Sanz Lopez

from Just Qvigstad

Usage in Models 1= 1923? ; 1= 1925 ; 1= 1926?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):3

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