Serial Number: 6095810 ※ Although "Nikon F mount" is listed in the size section, this is due to the specifications of our platform. This lens is actually for a Yashica/Contax mount. There is clouding on the front element, but the middle and rear elements, as well as the exterior, are very clean. Please read the following and consider before purchasing. [Appearance] ・There are no scratches or stains. [Optics] ・There is clouding and slight scratches on the front element. [Operation] ・Each ring can be turned smoothly. [Included Accessories] ・Please check the photos. ※ The photos may look slightly different from the actual product due to lighting conditions, etc., but no processing has been done. ------Notes-------- ・Please ask any questions before purchasing. Please note that returns and refunds are not accepted.