How do you go about finding someone good to fix an obscure Swiss watch when you are living in a city that is not in your country? The issue is - once you hand i

How do you go about finding someone good to fix an obscure Swiss watch when you are living in a city that is not in your country? The issue is - once you hand it over for service there's no particular reason for you to get it back except for the honesty of the repairer. How do you guage this? Or is it better to freight it back to manufacturer?