This control box was designed for the Polavision player, a device that showed the movies taped by the Polavision movie camera. This device is a wired remote control that would allow a phototape cassette to be rewound when the central button was pushed down (so a portion of the movie could be replayed). It was equipped with a built-in hand-winder to store the cord when not in use. Made in Austria.
See the description on the very useful Land List
website.