The lens is in very good cosmetic condition! The aperture and focus rings spin smoothly. The lens has an M39 thread, maybe someone once redid it or was specially made for Leica. I am attaching photos taken on this lens at a fully open aperture. Inside the lens there are black dots, a small amount of bubbles, dirt. The lens has abrasions of enlightenment! Perhaps someone erased it or it disappeared over time. Please carefully look at the photos and videos as they are part of the description.