Zeotrope - a drum-shaped device patented in 1834 by William George Horner. Inside the slotted cylinder is a series of pictures showing the steps of the movement. In a zoetrope set in rotation, the observer sees pictures only when the fissure is directly in front of his eyes, thanks to the stroboscopic effect it gives the impression of a moving scene. Such a 19th century cinema. Classic shape and colors. Height 19cm, dia. 14.2 cm. Emission stripes or "movies" 20 pcs. included. At this link, a video showing how the zeotrope works: https://www.youtube.com/watch?v=itgzLI6OrQo or https://www.youtube.com/watch?v=19LVqNx6mV4