Thank you for your further input, thetrenchdude. It lives in an attractive silver stand which is hallmarked for Chester and 1902. I have no reason to suspect that the stand and watch don’t belong together. I haven’t the confidence or competence to delve beyond what I can see but I intend to have it serviced when any further identification will be revealed.
What power reserve would you expect a movement like this to have? This one has around 30 hours.
I’ve not seen the YouTube clip to which you refer Eeeb but there was an interesting TV programme here which included a restoration project which was completed in time for the aircraft to take part in the massed Dak/DC-3 D-Day commemoration flight earlier this month.