What time is it? Watches and horology

A quick bit of advice from a watch forum creates some hope that the movement could be contemporary of the late 1890s or early 1900s.

Hallmarks are Swiss.

Those Hallmarks only started to be used around 1880 and by 1910 keywind only was pretty much dead technology, so that puts some very simple bounds on it. Whilst it's not impossible that someone recased the movement at a later date I can't see why anyone would have wanted to, so I'd go with it being the original case and movement. Given this design of cylinder escapement movement was out of fashion by 1880 I would suggest 1880 - 1900.

David Boettcher suggests that the three bears was typically reserved for cases intended for the UK, and if this was the case then the lack of UK hallmarks would certainly cut it off at 1907.