Identifying lady’s Omega

I'm attempting to identify the lady's Omega watch as shown. The case number is 5253, and also is numbered 366267 S&W. It has a 17 jewel movement and the case is 14 kt. white gold filled. The caliber is 480 and the serial number of the movement is 14709236. Note that there are stars at the 12 and 6 o'clock positions. I'd appreciate any information re: model, approximate age, and hopefully, approximate value.

Thanks in advance for any/all information.