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ID = 28553
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Tube type:  Triode, vacuum   Universal 
Identical to ES1_Ediswan = R_England
First year 1916 ?? Saga of the Vacuum Tube, Tyne page 218

Filament Vf 4 Volts / If 0.7 Ampere / Direct / Battery =
Description Ediswan version of the "R" 
Tube prices 1 Tube prices (visible for members only)
ES1_Ediswan: Ediswan ES1 Sold by Ebay Seller:kkksepix Ebay Item:112338110844 on 27 Mar 2017
Lindsay Shepherd

ES1_Ediswan: rtt
Michael Schlör


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