Very nice, well-built, unique lens from Yashica for M42 mount cameras such as the Pentax Spotmatic. The glass is clear, focus is smooth, the aperture ring moves easily. Comes with front and rear lens caps as well as a nice Tiffen UV filter. I am selling this on consignment in my shop in Amherst, NH so if you're interested in it buy it now before it sells locally. As it's a consignment item there is no flexibility on the price.