we35 al1 tube Telefunken Italy power tubes matched pair black plate test strong 1930's 

2 tubes we35 al1 tube Telefunken Italy tested on tube tester Funke W19S = 25mA for both tubes maximum emission test (reference good at 12mA) 

we35 = al1  Power pentode for last stage audio Output valve 

AL1 = TL1 = TAL1 = 9PW4L = WE35 = RAL1 = VAL1 = 4A23_Ultron = UAL1

Other class quality (otherwise equal):  E3aIII

other  base:  E443H ; L496D ; PP4101 ; RES964 ; RTP4 ; WE30

First  serieMar.1935 Tube leaflet collection E.Erb Apparate erst 1935 ist wohl korrekt.

sub the model E443H   RES964   L496D   PP4101   RTP4  

evolution AL4  

Socket Europe side contact P8A

Filament heater Vf 4 Volt / If 1.1 Ampere / Direct 

box 177