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ID = 18097
Brand: Grammont (Radiofotos, Fotos); Paris, Malakoff
Tube type:  Current Regulator, Iron in Hydrogen 
Identical to 6003
Similar Tubes
Normally replaceable-slightly different:

Base Edison big E27 = 27 mm (Codex=Edison 27 mm)
Filament Specified current AC/DC ~ = (Series working)

To be used with Valvgas 6006.

Text in other languages (may differ)
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   2-9-1933

Just Qvigstad
6003: own collection
Peter den Boer


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