Fontainemelon Movement 1
"This movement is by Fabrique d'Horlogerie de Fontainemelon (FHF), a big Swiss ébauche manufacturers, set up in 1793 to supply the Swiss watch industry with ébauches (bare movements) for finishing and casing. In 1891 FHF registered a trademark of an arrow through an apple, a reference to William Tell, the folk hero whose defiance of the established order led to a rebellion and the formation of the Swiss Confederation, and this trademark can be seen on the bottom plate when the barrel bridge is removed. You can see the apple with an arrow through it in the bottom left corner of the picture, I have indicated the barrel bridge screw which fits in the screw hole shown in the cut out.
Sometimes these movement have a reference number for a Swiss patent, CH 51482, stamped on the bottom plate under the dial. This patent for a "Mécanisme de remontage et de mise à l'heure" (a mechanism for winding the watch and setting the hands, i.e. a "stem set" or "keyless" mechanism) was granted to Fabrique d'Horlogerie de Fontainemelon. It has a priority date of 3 May 1910 and was published 1 September 1911.
In 1925 Ébauches SA was formed as an association of 26 ébauche makers, including Fontainemelon, A. Schild, ETA (at the time the movement division of Eterna), and a number of other Swiss ébauche makers."
Как Вам сказал, обычная механика для етово периода. Извините что перевода нет, но мне трудно писать по-русски:o
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