My father's watches.

My father did watch repairs in the forties, we found several watches one is a pocket watch in which we could not find too much info on. It is silver with no name on the face. Inside it has a patent number and the words Weckt/Still imprinted. Maybe with an alarm inside. I would love some more information. I found a similar one online that had a similar arrow on the face as mine, but it had "persistent" printed on the face, Landendorf on the back and alarm/ stop imprinted, along with the same patent number as mine. As you can see there is no alarm or stop printed on mine, instead it says Weckt/Still. Hmmm?? Hope someone out there could give me some more info. It has sentimental value to me, my father is no longer here to share the history of this watch.