The Fontainemelon 36 watch movement belongs to the Aurore-Villeret calibre series and is categorized as one of its variants, specifically the 232. Variations within this series include the 160-164, 166, 168-170, and 172-189, although specific differences are not detailed in movement catalogues. Notably, the Fontainemelon 36 distinguishes itself by featuring a rare lever bridge instead of the more common lever cock. This manual wind movement incorporates a sub second function and was produced around the year 1940.