For sale is  Carl Zeiss Sonnar 135mm f/4.0 lens for a rangefinder cameras Contax IIa/IIIa. It was made  in post WWII  West Germany in 1954 in the city of Oberkochen.  Serial number is 1599879. The lens is in excellent cosmetic condition. It is clean in and out. It is free from dirt, dust, fungus or haze. Aperture ring and focusing rings moves freely and smoothly.  Aperture blades are free from oil. There is very thin and hardly noticeable scratch on the front lens element near periphery which will not make any effect on a picture quality. You can also see an air bubble in the glass of the front element. It was created during manufacturing process and it is nor for a lens to have air bubbles and will not make any effect on a picture quality.  The lens can be adapted to a digital mirrorless camera. I have tested with my digital Sony NEX5 camera and it makes excellent pictures. Please see my pictures. Pictures 10 and 12 are the cropping of the previous pictures just to show the sharpness of the lens. It is coming with front and rear lens caps. A camera and adapter are not included in this sale.