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57T112A

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ID = 68378
       
Country:
United States of America (USA)
Brand: WLS (tubes), World's Largest Store - see also Sears, Roebuck & Co; Chicago, IL
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Triode, vacuum   Audio Frequency 
  Ca. 1925 up to 1945 rare.
Identical to 57T112A = UX112A = CX112A = 012A

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 0.25 Ampere / Direct / Parallel, (AC/DC)
Description

Pages 762 and 763 of the Fall 1929 Sears Roebuck catalog lists Sivertone tubes for the first time, with a totally new type number, for example 57T112A = UX112A. Research has not yet provided a manufacturer of these tubes or a location of a factory and Tyne's "Saga of the Vacuum Tube" page 362, states : "No information available" for Silvertone. It is presumed that these tubes were made by the Sonatron Tube Company, with an address in Chicago and also in New York and it is also known that Sonatron acquired three smaller companies in 1929 before they themselves were acquired by National Union (Tyne page 359). Silvertone tubes continued to be available for some years and tube boxes with both Sears Roebuck and Silvertone printed on them are relatively common in the US. Sears Roebuck Archives state that yhe company "ended its association" with Sivertone (radios and or tubes is uncertain) in 1972..

 
Dimensions (WHD)
incl. pins / tip
x 108 x 45 mm / x 4.25 x 1.77 inch
Weight 47 g / 1.66 oz
Literature Sears, Roebuck Catalogs (Silvertone)   Fall 1929 issue - pages 762 and 763
Saga of the Vacuumtube, Tyne   Pages 359 and 362
 
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57T112A: Fin Stewart
Fin Stewart

 

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