Jupiter-37A 135mm F/3.5, USSR Lens For Canon EF EOS !!!
Based on the lens Carl Zeiss Sonnar 3.5/135. It has 12 blades diaphragm! Included is an adapter for Canon EF EOS without a focus confirmation chip. Focal length: 135mm. Lens mount: M42, Canon EF. The photo is of the actual item for sale!