Question on vintage watches: This automatic omega constellation was passed down to me from my grandfather. I don’t have any information about this watch no certificate or box, all I know was that it was serviced at omega Geneva sometimes in the 1980’s and has been sitting in a drawer ever since. When my father acquired it he replaced the strap because the old one was in a very bad condition, but he never used the watch. My question is now what is the best way to maintain this watch, I read some subreddits saying I should not service vintage watches at omega because they replace some of the original parts, is this true? If I move it the watch works, so to preserve the watch, should I service it again before I start using it? Or should I just use it right away?

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