I'm having troubles while identifying some old (70 or more years old) pocket phones. As far as i noticed that watch was imported to Germany and made in Switzerland (if i recognized some hallmarks correctly) but I still miss some important details, like name, watchmaker, date etc.
Front:
Back:
Hallmarks:
More photos, in higher resolution and with all hallmarks are here.
Watch seems to be similiar to this one but none replied there yet.
Thanks for help.