…with one repairer, forget their name but they were on the lower ground floor of a building on Nathan Road just by Chungking Mansions. That was an expensive service which ended with a watch with loose parts rattling around inside. Not ideal.
I’d suggest taking the watches to Raymond on the Pottinger Street steps just up from Queens Road Central - he’s in, I think, the second little kiosk as you go up the steps from QRC. (It’s the only watch stand.) He mostly specialises in vintage Rolexes but has helped me get a few non-Rolex vintage watches repaired, and even helped a friend source and install a new module for an older Brietling Aerospace, etc.
Yes, I know it seems a bit odd to go to a guy in a stand on the street. But (in my experience at least) he’s honest, seems to know his stuff, and will tell you what he can and can’t do.
Best
E.