Vintage Omega Ladies Cocktail Watch Help?

It’s a manual winder, looks to me to have about 26 or 27 natural rubies of good colour, Nicely matched. The bracelet appears to be in good condition. Your next question is likely to be re: value. Try to find another identical watch that sold recently, and take note of what it sold for. I can tell you that is a fools errand! Since this is likely the only one like it that has sold recently, that means what you paid is the market value.

The value will be slightly higher than the scrap value of the gold. These aren’t sought after and the market is soft for this kind of watch.

If the perceived value of something is it’s value in the market place as determined by what a buyer might pay, then it is reasonable to say that the marketplace decides the value. In an era of 50% off! 60% off, 70% off, that is an indication that the sellers of stuff don’t know values, and are hoping to find a price a potential buyer might pay.

Talk to an auction house, and see what they suggest. They might tell you to get an insurance appraisal on it. But if the piece has a too high reserve price put on it by you, and the item doesn’t sell, you’ll likely have to pay the auction house the buyer’s premium to get it back! The Omega is worth more to you than to anyone else, and you obviously don’t want it………………! Don’t be surprised if your potential buyer sets out to find HOW MUCH you don’t want it!
As I said before, the value in the marketplace was determined by whoever bought it (you?). It would be a shame to sell it for the scrap value of the gold content, plus something for the rubies, but that might just be the option open to you. OR, to gift it to someone who might enjoy it.