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ID = 28535
United States of America (USA)
Brand: CeCo (tubes), C.E. Mfg. Co. Inc.; Providence, RI
Developer: CeCo (tubes), C.E. Mfg. Co. Inc.; Providence, RI 
Tube type:  Half-Wave Rectifier, gasfilled   Power-supply 
Identical to D_CeCo
First year Oct.1926 Saga of the Vacuumtube, Tyne Seite 344

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 1 Ampere / Direct / Parallel, (AC/DC)
Description This tube has a thoriated filament. Plate ratings are not known. Believed to have been made late in 1924, in limited quantities. The tube did not have the usual CeCo paper label on the bulb but had the brand name etched onto the top of the bulb. 
Dimensions (WHD)
incl. pins / tip
x 105 x 45 mm / x 4.13 x 1.77 inch
Literature -- Collector info (Sammler)   
D_CeCo: Bill Condon collection with permission from Mrs V Condon
Fin Stewart


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