Condition is good, there are minimal signs of usage and no major scratches on the matte surface. I can only see a small dot of discolouration on the tip of the arm - see photo.

I had this installed on my M6 without any issues. This Leica M-P style advance lever should be compatible with most Leica film rangefinders (as long as they have the same lever compatibility as the M6). This WILL NOT work on the M7. Please research into this for your model before purchase. 

Feel free to message me if you have any questions! Thank you!