Thank you for viewing. This is an Industar 50mm F3.5 classic lens, made in Russia. Known for its Tessar-type construction, it's lightweight and compact, yet offers high resolution, natural tones, and the soft peripheral rendering characteristic of classic lenses. It's particularly well-suited for monochrome photography, and when mounted on a mirrorless camera via an adapter, it provides a unique nostalgic atmosphere. *The mount field is required, so I've listed it as "Micro Four Thirds," but it is an M42 mount. Please check the condition of the product in the photos. There is some damage from normal use, but the helicoid operation and aperture mechanism are both in good working order. #Industar #Industar #OldLens #M42 #RussianLens #ClassicLens #TessarType