It has a maximum aperture of f/1.4 which allows for beautiful bokeh and low-light performance. 

The lens is manual focus and has a Contax/Yashica mount. 

This lens is part of the ZEISS Planar T* series and is a great addition to any photographer's collection. 

The lens is in good cosmetic condition. Focus and iris are both smooth.

The rear lens is clear of marks but there are some marks on the anti-reflective coating on the front lens. They're too feint to effect the images taken, but I've done my best to show them in the photo above.