So thought I'd share this not so common alarm PW with you,............ now starts the search for the movement/watch maker, quite a few choices with this one, & the search continues ;)
I saw this sort of hand setter on a E. Blancpain & Fils. pocket watch somewhere. come to think of it, there was a little pin sticking out of the edge of that balance wheel too.
Can't see any Moritz Kohn makers marks :(
Time for some more reading & learning :)