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ID = 55489
United States of America (USA)
Brand: Electrad Corporation of America; New York (NY)
Tube type:  Signal Diode - one single system   Detector 
  <1925 rare.
Identical to Electrad-Fleming
First Source (s)
1923 : Advertisement

Base Swan-Bajonett B15
Was used by Radio/TV-reception etc.
Filament Vf 1.5 Volts / Direct / Battery =

A dry cell tube for $2, with socket $2.50

Dimensions (WHD)
incl. pins / tip
x 78 x 20 mm / x 3.07 x 0.79 inch
Weight 11 g / 0.39 oz

Just Qvigstad
Electrad-Fleming: Vintage Electronic catalog
Geri Meier

Collection of



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