vintage amperex photomultiplier electron tube 50771 w/box as is untested France

Description

Sold "as found". Tube was carefully stored in box in plastic and padding. Please examine photos for condition.
Box states "made in France". Includes insert. Body of tube measures approx. 6.5" -  without pins.
I assume the tube is used because it appears to be wrapped in black tape, but it was very carefully packed inside box, as if it might be new.
Sold "as is".
I have many more tubes to sell - I don't even know where to begin but keep your eye on my listings if you are interested.