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ID = 44167
Tube type:  Double Triode   Audio Frequency 
Identical to F/6057
Similar Tubes
Other base:
  6057 ; CV4004

Base No base Wires only.
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Specified voltage AND current AC/DC
Description Flying lead version of the CV4004 6057.

Flying lead Special Quality version of the CV492 12AX7 ECC83

Tapped heater also permits operation at 6.3V, 0.3A. 

Dimensions (WHD)
incl. pins / tip
22 x 49 x mm / 0.87 x 1.93 x inch
Information source -- Original-techn. papers.   
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