There are some spots and mold inside the lens, and clouding around the rear element. (See photos 4, 5, 6, 7, and 8) There is some small dust and debris inside. The helicoid rotates. (Rotation is heavy) When the aperture linkage pin is pressed, the aperture blades open and close when the aperture ring is rotated. Front and rear caps are not included. For M42 screw mount. We have included many images of the lens exterior, so please check the condition. Everything in the photos is included.