[identification] Is this hand watch authentic?

Hi all and thank you for you patience and help, even if you just reading this thread.
There is a hand watch illustrated by attached photos which i need your help and advices to identify if it’s fake or not.
I should tell you that this watch is owned by a person in my family who has a jewelry store and examined it to make sure it’s gold with a strong feeling of a solid frame/cap of gold; plus i’ve marked some digits of the serial numbers to respect the privacy of the owner.
Personally i’ve been searching for any picture similar to this watch by reverse image search engine and other search tools, but failed after watching 1k+.
If anyone could give me the model, year of manufacture or any information would be so appreciated!
notes:it’s been repaired by a professional watch repair professional (as said to me).

There is no model name. It has a repainted dial, which deducts 50% of the value.My guess: The value is the gold value plus $100 for the movement.

Thank you both for your informations.
Sadly, seeing and hearing about that a part of the history is lost and manipulated to a result like this one not looking as good as it could be is painful!
I doubted that the reparations were done by a real professional one.
Is there any chances to get the exact model name and the year of manufacture for this piece?
Finally, is it possible to find the original parts and give it a try to be repaired by a real master? how much does it cost?

Just have the dial refinished and just Omega under the logo and Swiss Made at the bottom.

Hands are fine. Some models use Dauphine styled and some leaf.

Movement R17.8 and shouldn't be a problem finding parts if needed. Simple movement to service

Can use a company in Canada called Dialcraft in Ontario for refinishing. I haven't used them since the original owner sold the company

The original owner replated the indexes, so everything looked nice. Can only send the dial

If they still do it. Satin Silver or Satin Old (slight tinge for age) were my go to finishes


Similar dial