Instant purchase welcome. [Appearance] There are small paint imperfections due to age, but there are no noticeable scratches or stains. Please check the photos. [Optics] There is some minor dust, but there is no mold or fogging that would affect photography. When a strong LED penlight is shone through, slight coating irregularities can be seen, but I don't think it's at a level that would affect photography. [Operation] The aperture and helicoid movements are smooth and there are no problems. [Included Accessories] A Kenko filter and a generic rear cap are included. [Other] Although it says K-mount because there is no category for it, it is actually an M42 mount. #PENTAX #LargeAperture #OldLens #FullFrame #StandardLens #ScrewMount