I have a ladies' Omega watch but am unsure of any information on it! I have opened the case back and have some numbers. Inside the case back it reads Omega 14K 5553. Then on the actual workings inside there are several numbers. There is the number 212 near an Omega symbol. Then near the bottom the number 13428880.
If anyone is able to help that would be amazing. I have attached some photos. They may be difficult to see though...

 

Here is a picture.

 

I think you've answered it all. It's a manual wind cal 212, case ref 5553, dates probably from the 50s and unfortunately (ladies watches are not collectible) is worth melt value of the watch less crystal and movement. HTH.