80 tube pair RCA Radiotron power rectifier tubes full wave 

black base engreved base

black plate smooth 

hanging filament heater

sheet squared getter 

tested 58/52 ; 52/50 tube tester TV7 ( good at 40/40) old production globe balloon big shape fat

80 = R80_USA = EX680 = UX280 = VT-80 = KX80 = 80G = 280 = RGN380 = V580 = 180 = ER80 = 113A = 480 = P280 = RE-1 = CX380 = G-80 = PH280 = KX-280 = 110E/59 = 1560-ux = CL-80 = AC80 = PM280 = PU080 = ER280 = MX280 = X-280 = CV1708 = V510 = VT159_GPO = 680 = PR280 = DX280 = SX280 = VX280 = NU-80 = C-80 = TS280 = RayX-280 = RYB280 = Z80_Zenith = GX280 = TC280 = T-80 = SLX280 = C-280 = NX-280

full wave vintage vacuum tube power supply for power amplifier and pre amplifier preamp 

box 83