This is an old lens, a Summitar 5cm f2 made by Ernst Leitz Wetzlar. It is a Leica L39 screw mount (L mount) lens, and a Cosina adapter is attached. The body only is available, and since there is no camera, the operation has not been confirmed. It has been confirmed that the aperture blades and the helicoid move manually. Please refer to the photos for the appearance and optics. Although no major scratches, haze, or mold can be seen visually, this is being sold as-is, so please understand. ⸻ 【Specifications】 • Focal Length: 50mm (5cm notation) • Aperture: f2 to f16 • Mount: L39 (Leica screw mount) • Manufacturer: Ernst Leitz GmbH Wetzlar • Serial: 876980 (engraved on the lens barrel) • Adapter: Made by COSINA CO.,LTD. (attached) ⸻ 【Included Items】 • Front cap (third-party) • Cosina mount adapter (attached to the body) ⸻ 【Condition】 • Appearance: Shows signs of use commensurate with age • Optics: Some dust particles present, no mold or haze (visual inspection) • Operation: Not confirmed due to lack of a camera ⸻ 【Notes】 ※This is an old lens, and it is sold as-is. Please understand before purchasing. ※Since the operation has not been confirmed, please consider it as junk. ※This lens is L39 (Leica screw mount). The size is listed as "Nikon F mount" because there was no option for L39 at the time of listing. ⸻ 【Shipping】 • Will be carefully packed with bubble wrap and shipped via anonymous delivery.