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ID = 38981
United States of America (USA)
Brand: RCA (RCA Victor Co. Inc.); New York (NY)
Tube type:  COUNTING AND MEASUREMENT, general 
Identical to Selectron_256
Similar Tubes
Other characteristic (electr. data):
First year 1946 - - Manufacturers Literature

Was used by Industrial

RCA Selectron is a very large 256 bit computer memory tube from the mid 1940s. See Selectron tube at Wikipedia nad see the similar Williams-Kilburn tube.

Text in other languages (may differ)
Information source -- Collector info (Sammler)   
Selectron_256: RMG
Robert Gillespie

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