5U4G u52 tube nos fivre italy rectifier tubes smooth plate hanging filament full wave power rectifier vintage tube 

one tube type 5U4G Fivre Italy NOS nib

tested strong on tv7 tube tester = 50 & 50  (reference good at 40/40) 

black base 

D getter 

smooth plate 

grey plate 

hanging filament 

supplied with original carton box 

highest quality vintage power rectifier tube 

5U4G = 5Ц3С = VT-244 = U52 = GZ31 = 5Z3P = CV1071 = U52 = VU71 = 10E/11529

power rectifier  full wave 

Socket Octal K8A

Filament Heater Vf 5 Volt If 3 Ampere Direct 

1550V PIV, 225mA max DC. 44V max drop at 225mA.

box 216