I had this, but later sold it; made in Germany. The films were not celluloid but sellophane, and only half the thickness of normal film. You needed a special projector to show these, the average projector will either not take the film up, or it will destroy it.

I have some "toy" projectors that are made for these films ( Piccolo and Noris ). The films were sold at a price per meter and exact length was specified on the boxes. Have a couple of these films, but don´t watch them. Short and very delicate