Leica Tri-Elmar 28-35-50mm F4, version one (55mm filter) with Leica UV/IR filter. I had the lens converted to 6-bit coding by Don Goldberg (DAG Camera Repair) who does a perfect job of machining and coding. The focal length detents work perfectly on this lens and are firm and precise. I originally used this lens on an M8 and later on an M9 with fantastic results. The lens shows only the very slightest signs of usage (hard to tell from a new lens) and is optically and mechanically like new. Includes box and leather pouch. I am the second owner. Price of $3,500 includes Palpal fees, shipping and insurance via registered mail. Ship to CONUS only to verified Paypal address.