1 KG VERY RARE FAST PETZVAL TYPE UNIQUE BRASS VINTAGE LENS. There is no manufacture label but it was made by a top level company. Most probably by Ross, Dallmeyer or Darlot. According to measurements it has a focal distance of about 19-20 cm. And an aperture about F5-F6. It covers about 5×8. VISUAL AND OPTICAL CONDITION IS EXCELLENT. Glass is excellent without damages, fungus, fog or separation. Rack and pinion mechanism works nice. There is a waterhouse slots for F-Stops. The brass barrel is in nice condition with non-crucial marks from time. Lens is slightly more than 1 kg in weight. Height = 135 mm, Front. Diameter = 80 mm, Glass Diameter = 65 mm. Comes with a mounting flange. This is a fantastic lens for usage or. Average delievery time 2-3 weeks. Buyers with a feedback of less than 10 points should contact me first!