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Keystone Radio & Electric Co.

Keystone Radio & Electric Company, 110-116 Nassau Street, New York, New York, USA


First seen: 05-Apr-1924
Last seen: 01-Apr-1925

Brand(s): Keystone

Entering the market in April of 1924, Keystone Radio & Electric appears to have only offered one tube type.

 

Keystone variants:

 
K T
E O
Y N
S E
201-A
1
Tube
{v1} Globe, brass base, tipped, ink stamped


Keystone variant
 
 
 
 

{v1} "Keystone" "Type 201A" with envelope etching.


I inserted the artist rendition of the Keystone Type 201A, since I have seen no examples.

Gone by May 1925, they seem to have produced tubes for about one year. 




Bibliography references:
  1. The Bridgeport Telegram, Bridgeport, CT, 05-Apr-1924, pg. 4. From Newspapers.com. Retrieved 15-May-2019 *
  2. Radio News, Aug-1924, pg. 242. From AmericanRadioHistory.com. Retrieved 15-May-2019 *
  3. Radio News, Dec-1924, pg. 949. From AmericanRadioHistory.com. Retrieved 15-May-2019 *
  4. Radio News, Jan-1925, pg. 1302 . From AmericanRadioHistory.com. Retrieved 15-May-2019 *
  5. Radio News, Apr-1925, pg. 1991. From AmericanRadioHistory.com. Retrieved 15-May-2019 *

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