This is a Nikon EL-NIKKOR 50mm f/2.8 enlarging lens. It has been stored in a dehumidified storage case. It looks clean to the naked eye, but dust particles can be seen when illuminated by an LED. There is no noticeable cloudiness or deep-rooted mold, but there may be some minor clouding due to aging if examined closely. Please understand that this is being offered at a low price. There is no oil on the aperture blades. There is paint loss on the lens frame (see image 4). The included items are all shown in the photos. - Brand: Nikon - Model Name: EL-NIKKOR 50mm f/2.8 - Lens Diameter: 50mm - Maximum Aperture: f/2.8 - Mount Type: For film cameras - Accessories: Lens cap Thank you for looking.