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History of the manufacturer  

Diamond Electric (Specialties) Corp.; Newark, NJ and Chicago, IL

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Name: Diamond Electric (Specialties) Corp.; Newark, NJ and Chicago, IL    (USA)  
Abbreviation: diamond-tu
Products: Model types Tube manufacturer

Diamond Electric Specialties Corporation
Richmond St., Newark, New Jersey (1924)
102 South Orange Ave., Newark, New Jersey (1924)
43-45 South Wells Street, Chicago, Illinois (1921)

Diamond Electric Corporation
780 Freylinghousen Ave, Newark, New Jersey (1929)
Chicago, Illinois

Tube brand: Diamond

This company is mentioned in Tyne's "Saga of the Vacuum Tube", page 354. George Fathauer's book "Radio Tubes and Boxes of the 1920s" page 34 shows a box for the D171 A.C. tube (mentioning Newark and Chicago) and a company advertisement.

Diamond Electric Specialties started as a manufacturer of batteries, flashlights and lamps in 1912. The "Booth Report of Exibits at R.M.A. Show" (Radio, July 1929, p.38) mentions batteries and tubes for Diamond Electric Corp., which is a strong indicator that it's the same company, after presumably at some point dropping the "Specialties" from their name. Both firms had an office in Chicago.

Founded: 1912

This manufacturer was suggested by Fin Stewart.


Further details for this manufacturer by the members (rmfiorg):

Radio-News, March 1924, p.1314tbn_usa_diamond_radio_news_03_1924.jpg
Radio News, May 1925, p.2152tbn_usa_diamond_radio_news_05_1925.jpg
Radio-Age, Dec. 1925, p.53tbn_usa_diamond_radio_age_12_1925.jpg
Popular Radio, March 1924, p.52tbn_usa_diamond_1924.jpg
Diamond brochure 1920's "Radio Tubes and Boxes of the 1920's, page 34tbn_diamond_advert_gf.jpg