If they really sent it to Switzerland, then you should ask them for the paperwork and warranty for your records. There was another thread recently where a dealer claimed to send a watch to Omega but apparently did not.
https://omegaforums.net/threads/omega-us-questions.140503/
Regardless, as long as the watch was properly serviced, there should be no problem wearing and enjoying the watch. Just make certain that you have a warranty in writing. Omega would give a two-year warranty IIRC. In my experience, it's not uncommon for issues to arise with old watches, so hopefully the jeweler will stand behind their work.
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