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UDG7

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ID = 71533
       
Country:
Great Britain (UK)
Brand: GEC, General Electric Co Ltd., GENALEX; London
Tube type:  Photocell Gas filled 
Identical to UDG7

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Sidecontact and top contact.
Filament --/--
Information source - - Manufacturers Literature   


Just Qvigstad
ung7_1~~1.png
UDG7: own collection
Peter den Boer

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