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ID = 56318
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Tube type:  Ballast Tube (neither FeH or Urdox) 
  <1925 very rare. ***
Identical to 1_Ediswan

Base Blade contact Base on each end.
Was used by Military and/or Government
Filament Direct / Battery =
Description Ediswan Baretter No 1 printed on bulb, British broad arrow W stamped into base. No literature available. 
Dimensions (WHD)
incl. pins / tip
x 78 x 20 mm / x 3.07 x 0.79 inch
Weight 25 g / 0.88 oz
Information source - - -   
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1_Ediswan: Fin Stewart collection
Fin Stewart


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