He tells me that there they had on display a mechanical shadow theater by the artist Emmanuel Cottier -- Swiss clockmaker who worked in Carouge, near Geneva.
The exhibit documented in photographs and posted online is from an earlier exhibition at the museum of Carouge near Geneva. The mechanisms are fascinating. The text is in French. For non-French speakers, simply follow the link in the lower right labeled "Pour voir la suite..."
Enjoy the Shadow Automata of Emmanuel Cottier. [Thanks Falk!]
You can learn more about this collection at The Musee National De Monaco from the book: The Mechanical Dolls of Monte Carlo