This is a hard to find Olan Mills 50-150mm f4.5 Commercial Camera Lens​ with a protective filter in excellent++ condition! The lens only shows some minor wear with a light scratch mark on the rear glass surface and no dirt, fungus or mold. It focuses and zooms properly and the aperture works properly with no problems.  I have a money back return policy if not satisfied so buy with confidence. Shipping will cost $15 within the US or $55  for other international destinations.