Could you post photos of the inside and outside of the case back?
Também fotos do interior e exterior do fecho da pulseira, procurando por qualquer logotipo, marcações ou marcas registradas seriam de interesse
Looks like a Ladies Omega watch in a solid gold 18k case with the Cal 211 movement. Here is some info on the Cal 211. You can google Omega Cal 211 to find similar examples of this watch. It's a small movement, so mainly in Ladies' Omegas.
Omega 211
Ligne: 5 x 7'''
Jewels: 15
Lift Angle: 54°
Frequency: 18000 vph
Type: Manual Wind
Period used: 1949-
Size: 12 x 15.5 mm
Height: 3.5 mm
Hands: 0.90 x 0.50 mm
The Omega 211 is a manual wind watch movement used by Omega from 1949 onwards.