Hi All, I’ve recently purchased this lovely vintage ladies Omega watch to give as a present. It’s a unusual design and I assume from the 60s or early 70s. As it’s unusual in design, i would really like to do a bit a research on it. Like when it was made, which collection it belongs to etc. I could probably research this information with the case reference number inside the case back. However to take the case back off, I assume I have to remove the crown first. I’ve never removed a back wind crown before and am hesitant to try until I know exactly how to do it. Can anyone please direct me on this? Also any info on the watch would be nice.

Thank you as always to this forum community.

 

I am reluctant to tell you what you need to do. One slip, and you have relegated the watch to scrap gold. You need to hold the button, unscrew the screw, and then pry the back off. Now that you know how, don’t do it,

 

Thank you! Is it that risky? Does the stem also come out by unscrewing the screw?

 

No. The crown has a square hole in it which fits over the top of the stem. Pull the crown off once the screw is out, and do not lose anything. The stem will remain in the watch. The danger comes when you start out to remove the snap back! Let the tool slip, and the watch will go to the scrap dealer! Do not attempt this!

 

Ok I see the risk. I’ll take your advice and leave it.
I’ve looked through A Journey Through Time and internet but can’t find any info on the watch. Would have been useful to have the case reference.

 

The movement is likely a 13.5 mm diameter (1/2 inch diameter), calibre 440 Omega. This is considered a tiny movement. This would have likely been a scarce movement back in the day. And if the tool you use to remove the back, slips, chances are you’ll end up selling the watch for scrap value. That was likely a scarce movement back in the day, and there’s a good chance parts might be scarce, and a repair very expensive. It looks to be in nice shape, and is probably 18-karat gold. Try this yourself, and you will regret it, I predict.

 

Thank you for your advice. I really appreciate it. I’m going to completely take your advice at not try opening it. Sounds like I could regret it.