The Komura Komuranon-S 50mm f3.5 Enlarging Lens is a high-quality lens designed for darkroom printing, featuring a 50mm focal length and a classic black colour. Made by the renowned brand Komura in Japan, this lens is equipped with click stops for precise focusing. The E39 screw thread fitting ensures compatibility with various enlargers, making it a versatile and reliable choice for film photographers looking to achieve sharp and detailed prints in their darkroom.

Good working lens. 
Apertures f/3.5- f/22.  Some dust but works fine.