Ladies gold vintage watch - identification help needed

I just inherited this lovely, tiny vintage Omega ladies watch from a family member. I tried to google what model it could be, but with no luck. Found some similar pieces, but not the same one. Would you be able to help me?

The watch is golden with a square face, Omega text on the top and a “Swiss made” text at the bottom. Omega logo on the crown. Dimensions are 1,7 x 3,0 cm. I don’t know if the bracelet is original, but the lock has small carvings “U.S.A” and maybe “Champion” in it. Edit: Inside the case, next to the glass there is number 247 engraved on the frame.

I have no idea about the date, but I reckon it’s about from between 50-70’s, located in Finland and very probably originally bought from there as well. The watch has been in my family at least 30 years.

Hello, and welcome to the forum. Please read through this thread for information on how to post pics of the case and movement for identification: https://omegaforums.net/threads/vintage-omega-posting-guide.383/

Best wishes!

Thanks for the help! I got the case open and added photos to original post, let's hope this helps. I have no courage to pry the back open myself, having no real knowledge of handling watches.

In that case, you'll need someone more courageous to help you. Maybe a local watchmaker can assist. The info you need is under the case back.

Thank you, I will reach out towards and expert and update the findings when I get them!