TELEFUNKEN
RGN1064 tube
G1064  KL74303
Mesh plates, foil getter
Full Wave Direct Heating Rectifier tube
Vf=4V, If=1A
made in Germany by Telefunken in February 1939 ("fo" code)
Slightly used or unused tube, tested
good emission:
40/44mA
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