Mamiya Sekor C 35mm F/3.5N M645 medium format prime lens. Mamiya Sekor C 35mm F/3.5N lens for M645 1000, Super or TL medium format cameras. While it has the feel of an old lens, there are no major scratches or problems. The focus ring is stiff, but it works normally. Using a strong light, dust or debris can be seen in the optics, and a little bit of mold is visible on the edge of the rear element. Please refer to the photos. In my personal opinion, it doesn't seem to affect the photos. There is no haze or balsam separation. I was able to use it for film photography this year, over several months, with a 645 Pro TL. The sample photos were taken in March with Kodak Gold 200. When not in use, it was stored in a dehumidified storage box. Accessories: Rear cap, front cap Please check the notes in my profile.