The Constellation range appeared at Omega in 1952. The movements are certified chronometers and the case backs are engraved with the image of the Geneva Observatory as well as eight stars.
The shape of the case is called "C Shape" on this reference, a variant of the cushion case. A brushed bezel and chamfers are also part of it and give a beautiful play of light to the whole.
You can follow the review of a similar model in this blog post:
Bracelet: Omega 1172 with 515 19 mm endlinks for a wrist with a maximum circumference of 18.5 cm
Condition: Superb condition! The dial was manufactured by Beyeler (Rolex, Omega subcontractor ...). New back gasket and glass. Case with superb edges. Very good condition for its 49 years.The movement has been checked and regulated, this Omega works perfectly.
