Hard to tell from those pictures.
Service by a Watchmaker with a Omega parts account and your all set.
Don't take it to Omega ( will charge you a lot and change too many parts ) and make sure the watchmaker knows you want it to stay original and you don't want it polished
Let us know what country you are in and someone might be able to help out with a service place for you.
Not more else we can give you until you post good pictures.
Welcome to the forum.
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