I've been searching the web for a few days already and can't find any info on this piece. Would greatly appreciate if anyone can help. Posting pics for the more knowledgeable:

 

Please read this. It will help the more knowledgeable not need to be clairvoyant. https://omegaforums.net/threads/vintage-omega-posting-guide.383/

 

Thanks and apologies for not including more detail.

I specifically need help on dating and the model number - - valuation is appreciated but not necessary. The watch is owned and is 18K gold with a manual winding mechanical movement with about a day and a half of power reserve.

 

Looks like an 80's model. Need to see the case back and movement to get more info. Not a real desirable reference. Price will be in the gold.