Optics are clean and clear with no hazing, fogging, or fungus. Some moderate dust as to be expected. Somewhere in the lens there is what sounds like a small ball bearing rolling around. Does not affect use. Aperture is snappy and working at all settings (also clicks into place at each stop, so I assume whatever rattling inside isn't the aperture ring ball). Includes rear cap only. See photos for condition. Focus turns smoothly. Thanks for looking!