VERY RARE VINTAGE E. MANSE FRENCH BRASS LENS #3 F8. Measured Focal Distance is about 20-21 cm. CONDITION IS EXCELLENT WORKING. Front and rear elements are without scratches, fungus, fog or chips. Lens design assumes no aperture blades but there is a waterhouse slot for F-Stops. Front Barrel diameter = 45 cm. Front Barrel diameter = 46 cm. Height = 62 mm. Visually very good with normal signs of time. Comes with a mounting flange. Buyers with a feedback of less than 10 points should contact me first!