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ID = 67878
United States of America (USA)
Brand: WLS (tubes), World's Largest Store - see also Sears, Roebuck & Co; Chicago, IL
Developer: Westinghouse El. & Mfg. Co. - see also Canadian W. 
Tube type:  Triode, vacuum   Detector 
  <1925 very rare. ***
Identical to 2959 = Junior_Concertmaster = WD12

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Was used by Radio/TV-reception etc.
Filament Vf 1.1 Volts / If 0.25 Ampere / Direct / Battery =

The American company Sears Roebuck, with its head office in Chicago sold the standard range of Ameerican designed and made radio tubes friom 1925. A few small manufacturers made these tubes and they were branded "WLS" (Worlds Largest Store). The company allotted each tube a four digit type number. The company also sold regular branded tubes such as Radiotron, Cunningham, Solartron and Meteor.

Page 552 of the 1925 catalog lists this tube and it is also on page 493 of the Spring 1926 catalog.

Dimensions (WHD)
incl. pins / tip
x 105 x 34 mm / x 4.13 x 1.34 inch
Weight 52 g / 1.83 oz
Information source Sears, Roebuck Catalogs (Silvertone)   Page 552 1925
-- Collector info (Sammler)   

uv~~82.png 2959: Fin Stewart
Fin Stewart

Just Qvigstad

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