Servicing a movement is not really a problem, as even if you can't take the watch in to a watchsmith for repairs (some will work on reps some won't, and given the law in France, I wouldn't want to risk it) but, as mentioned before, if you have the skills, you can swap out a movement in about 10 minutes (assuming all goes well ) and failing that, there are watchsmiths on the forum who can do the work as well, including a few base in the EU, so as to avoid customs issues Best of luck with you purchase