2 tubes ez11 Telefunken steel tubes amde in germany 

tested on tube tester Funke W19S = 50mA & 50mA for all both  tubes 

same emission test results 50mA & 50mA  maximum emission  (reference good at 17mA & 17mA) 

matched pair of steel tubes made in Germany by Telefunken top quality vintage rectifiers 

box 200