Pentax Camera etc M42 screw on lenses as follows: Takumar 55mm F1.8 with slight dent to top of housing $50 Helios 44-2 58mm F2 with dent to housing sold Praktica 28mm F2.8 sold Rare Eyemik Multi Coated 35mm F2.8 $200 All lenses are in working order, no mold or scratches. Prices are firm.