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ID = 27723
Tube type:  INDICATOR, in general 
Identical to CV119

Description Bolometer, visual power indication. Directly heated tungsten filament. 0.7A 'just glowing', 50W max power.
Information source -- Original-techn. papers.   
CV119: Private collection
Emilio Ciardiello

CV119: Manufacturer's Literature
Emilio Ciardiello

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