Mamiya Sekor 65mm F3.5 Twin Lens Reflex Lens for Mamiya C33, C220, etc. MAMIYA-SEKOR 1:3.5 f=65mm LENS MADE IN JAPAN A valuable wide-angle lens for Mamiya twin-lens reflex cameras. Condition: Shutter: All speeds from 1 second to 1/500 second appear to change correctly when visually inspected. B (bulb) function also appears to be working without issue. Aperture: Opens and closes without issue from fully open to minimum aperture. No oil stains are visible. *While I have checked the aperture and shutter, I cannot guarantee precise accuracy. This is based solely on visual inspection, and I have determined there are no problems. Optics: Appears clear. There appears to be no mold, but some dust (or similar) that does not affect the image is visible. This is to be expected given the age of the lens. (I am not very knowledgeable, but I believe there may be some minor haze or balsam separation? However, based on my subjective assessment, it appears as described above.) As this is an antique item, I cannot guarantee every detail of the mechanics and optics as described above. However, I believe there should be no issues affecting photography. Please understand that the exterior condition is commensurate with its age, and refer to the photos. Will be shipped via Rakuraku Mercari (Yamato Transport) with careful packaging. *Please inspect the item upon arrival and provide "receipt evaluation" as soon as possible. *Due to the age and checked condition of the item, returns and refunds are not accepted. I believe this is a valuable wide-angle lens for Mamiyaflex cameras. Please take this opportunity to acquire it. I plan to list Mamiyaflex bodies and lenses in the future. If you are interested, please follow my account and check them out. Thank you very much.