General Electric KR-6 Kenotron
Ref. G9
Probably dating back to the Forties or Fifties, this oil-immersed Kenotron is about 10” (25 cm) long, has a diameter of 4.5” (11 cm), and bears on its anode cylinder a serial number “X 2886”.
The filament is in an axial position inside the anode cylinder, held by a helical support, similar to that seen in the early air-cooled GE kenotrons KR-3 and KR-4.
The technical specifications are unavailable.