This very rare vintage Yamasaki E-Gongo 165mm f/4.5 large format barrel lens has a rear thread diameter of 52mm. There are a couple of light scuffs and scratches on the barrel's exterior and there is a light coating spot in the center of the front element (please see photos). It will have no impact on its performance. Its aperture adjustment is smooth and its glass is free of any haze, fungus, or separation to its elements. There is a small amount of oil on its aperture blades.
