Pocket watch movement with Breguet hairspring

Description

This 11 1/2 ligne pocket watch movement is of unusually high quality, it has a real bimetal balance and a Breguet hairspring.

On the dial side, the numerical sequence “37023” is engraved, and you can see a clutch lift, however, is switched over by the pusher from the winder to the hands setting function.

Unfortunately, it can not be determined in the relevant Flume movement finders, which movement it actually is.