B+W 55E 1 bi-focal length closeup lens 55mm with nice leather case. The lens has two portions like bi-focal glasses. Part of the lens is close up so you can have the close subject in focus and the background in focus as well. Swivels on the mount to orient the closeup portion of the lens where you want it. The glass is in good shape with no scuffs, nice and clear. The filter ring is in good shape and the threads look ok. A unique lens for getting a great shot.