Excellent condition without optical or mechanical problems. Cosmetically in very nice shape with both caps and lens case included. Focus is very smooth, aperture perfectly clicky. Very well cared for lens.
Lens cases from these 500mm f4.5 lenses have decaying foam in them which
coas the lenses in dust. The included case has been refurbished in
such a way that it's not original looking, but is extremely strong and
functional. What I've found with these giant lenses is that there's no
substitute for the original cases, but they take a lot of work to make
them useable. I use Silicone to replace the foam and reinforce the
cases to provide years of safe transport. Don't buy super telephoto
without eh case, or you'll struggle to find anything capable of carrying
it reasonably conveniently.