TELEFUNKEN

RGN1054 tube
G1054  KL74301 506
Mesh plates, cup getter, Bulb Globe
Full Wave Direct Heating Rectifier tube
Vf=4V, If=1A
made in Germany by Telefunken in February 1936 ("df" code)

Not much used tube, tested

very high emission:
60/60mA
f=4V Ua=30V

tube is in a perfect technical shape
you will get the tube from the pictures

I always send tubes by priority registered mail within hours after receiving payment