[Refugee]

All the tubed cameras I have seen warm up to a white raster that darkens down to reveal the image.
I have several cameras from that period that work to some extent.
In one of your photos there appears to be a hefty dent in the case.
There are a number of things that could go wrong with the tube if it has taken a hit.
I am not sure how the view finder comes off but once ir is removed the lens should just screw off if it is a "C" mount.