For sale is a collapsible Industar-10 50mm f/3.5 lens. It is an M39 (L39) Leica L mount lens. It is also known as a copy lens of the Leica Leitz Elmar. The body has some scratches, but it has a dazzling silver luster and is in good condition for an old Russian lens. Due to the lens structure, dust easily enters, and there may be some minor dust particles. This is minor and does not affect the image quality. No mold is visible inside the lens. When the lens is held up to strong light, a slight haze can be seen inside the lens. This may affect the image quality in specific shooting environments, such as backlit situations. There may be some light cleaning marks on the surface of the lens, which are characteristic of this lens, but they do not affect the image quality. Both the focus ring and the aperture ring move smoothly. As an aside, if you do not have an adapter, I recommend purchasing an adapter made by K&F Concept. Inexpensive adapters that can be purchased for under 1000 yen may lack precision, and it is safer to purchase a well-made one. If you have any questions, please ask. I will answer them as best I can. I am also selling other rare old Soviet lenses, and I plan to increase the number of items for sale, so please take a look. Keywords: Collapsible Industar-10 50mm f/3.5 M39 L39 Leica L mount old lens Industar-22 Industar-50 Leitz Leica Elmar