Omega „Seachero” or not?

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Agreed that it’s a 2990 case. I would have to see much better photos to be sure, but I think that the dial may be refinished
Should be all original.
 
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172
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441
Need a clear close-up on the writing under the 6 ...
”Swiss made”.

The case is in very good condition, movement looks very good and the dial have age related starburst patina. I don’t think I want anything done to the dial but a gentle cleaning of it and the hands should be cleaned too. Sent for service now.