CV491K64PhilipsBranded MiniwattPinched TipCode On Tubek64 ⊿8LCountryHollandGetterD-GetterGlass ColorClear GlassMicaDoubleNotesD-Getter with flat cross barPermanentid23ww78eik2Pin ColorSilver PinsPlate ColorMatte GrayPlate LookRibbed / ScalePlate Size17mmTip ShapePinched TipYear1958More CV491 type tubesCV491MullardCV491Branded HivacCV491Branded SiemensMore tubes manufactured by PhilipsEL34, SYOPhilipsBranded Tekade12AX7, ECC83PhilipsBranded Hammond12AX7APhilipsBranded AmiRoweEL34, XF4PhilipsBranded Valvo12AX7PhilipsBranded RogersECC83, MC0PhilipsBranded Valvo7693PhilipsBranded AmperexGZ34PhilipsBranded MullardEL34PhilipsBranded PopeEL34, 6CA7, SYOPhilipsBranded MullardMore tubes branded MiniwattECC83Branded MiniwattDarioECC83, MC1ValvoBranded PhilipsMiniwattE90FBranded MiniwattECC40Branded PhilipsMiniwatt6189Branded MiniwattDario6SN7GT, R93MazdaBranded PhilipsMiniwattECC83 12AX7Branded MiniwattEL6Branded PhilipsMiniwattEL34Branded MiniwattDario4654, 4654KBranded MiniwattDarioPhilips