Pentax-M SMC 135mm f/3.5 PRIME lens, K-mount, Pentax CLEANED + TESTED Genuine high-quality Pentax lens. Cleaned and tested. Free of fungus, separation, scratches and oil. K mount. Comes with filter and genuine Pentax back cap. There are some small dust specks in the lens, as will nearly all lenses of this age. They do not impact your photo.