Can anyone out there help me identify this Swiss movement? I've looked through an old Paulsons catalog, and Swartchild catalog and cannot find this movement. It is either 12.75 or 13 ligne (American 0s), and the serial number under the dial is 243,759. There is also "36F" stamped on the movement under the dial. I thought all the Lady Stewart's made for Sproehnle & Co. were made by Illinois...this is the first one I have come across with a Swiss movement.

This is the underside showing the setting lever. Usually that is helpful in identifying the maker, but I just could not find it in any of the old catalogs

Here is the dial (just one minor hairline down near the setting lever).