The Cabinet of Dr. Caligari (1920)

This version of the sonambulist, Cesare, was done by the artist, Barsom (this is copy #10 out of 50 made). The cabinet opens revealing the figure of Cesare ready to do his master’s bidding. All in all a straightforward build with no particular complications.”

From Wikipedia:

The Cabinet of Dr. Caligari (German: Das Cabinet des Dr. Caligari) is a 1920 German silent horror film directed by Robert Wiene from a screenplay by Hans Janowitz and Carl Mayer. It is one of the most influential of German Expressionist films and is often considered one of the greatest horror movies of the silent era. The film used stylized sets, with abstract, jagged buildings painted on canvas backdrops and flats. To add to this strange style, the actors used an unrealistic technique that exhibited jerky and dance-like movements. This movie is cited as having introduced the twist ending in cinema.