Original Philips Miniwatt KC4 NOS tube
Direct heated triode
Vf - 1V If - 0,1mA
The tube seem to be NOS unused, tested with the great results:
Ia = 3,4mA (150%)
where 100% for the new tube is 2,2mA
the tube is in a great technical and visual shape.
Europe side contact base P (P8A)
you will get the tube you can see at the pictures
I always send the tubes by priority registered mail with tracking number within hours after receiving payment