Letting go a Leica 50mm f/2 Summicron Rigid.
Lens is in good condition, as pictured. There are user marks (some cosmetic blemishes) and also the glass do have very very fine internal cleaning spots/marks.
You can see it near "summicron" on the 3rd picture.
By no means the marks affect the images.
Looking at just $800 plus shipping.
These pictures were taken with it: