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D100_4pin

Country:  France      Brand:  Grammont (Fotos); Malakoff et Paris 
  Tube type:  Vacuum Pentode   Power/Output 
  Ca. 1925 up to 1945 rare.
Tube ID = 37231
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Identical to D100_4pin
Similar Tubes Normally replaceable-slightly different:
 B443_4pin
Base Europe 4-Pin (A, 4A, B4, since 1914) Sidecontact
Filament Vf 4 Volts / If: 0.15 Ampere / -: Direct / -: Battery = /
Literature -- Collector info (Sammler)   
- - Manufacturers Literature   2-9-1933

d100ea4l_web.jpg
D100_4pin: CA
Christian ADAM
 
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D100_4pin: own collection
Peter den Boer
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