I have never seen on of these before for the Spotmatic. It appears to be intended for sound dampening or possibly as camera armor. It encloses the camera body and has a small cable release that sticks out of the top. There is a window for the finder and you can pull out the film advance.I confess that it does not make a huge difference for sound. It does provide a little bit of impact protection for the body. Whatever it is, it seems to be rare because I have seen a lot of Spotmatics and this is the first one of these. The case is in good condition and works perfectly. The cable release is in good shape.