The aperture is smooth and there's no oil stain. It works without any problems. The helicoid is also fine. There is a small amount of dust inside. I saw a little bit of thin mold on the internal lens. It didn't affect the photos. I'll upload some photos taken recently. The exterior shows some signs of use, but it's relatively clean. It comes with a front cap and a filter. A Focus Camera mount adapter is also included. Nikon Z mount to CY mount lens. If you only want to buy the lens, it will be 3000 yen off. Please note that it is not a Nikon F mount. Thank you.