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ID = 34167
Great Britain (UK)
Brand: Metropolitan-Vickers (Metro-Vick, Cosmos); GB
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
Identical to SP45/U

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / Half indirect

Story of Cosmos valves see here

Dimensions (WHD)
incl. pins / tip
57 x 151 x mm / 2.24 x 5.94 x inch
Weight 72 g / 2.54 oz
Information source -- Collector info (Sammler)   
SP45/U: Sammlung GJ
Anonymous 544 Collector

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from Just Qvigstad

Collection of a member from D

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