The Constellation line appeared at Omega in 1952. The movements are chronometer-certified and the case backs are engraved with the image of the Geneva Observatory as well as eight stars.
The case shape is referred to as "C Shape" on this reference, a variant of the cushion case. A brushed bezel and chamfers are also part of the design and give a beautiful play of light to the whole.
You can follow the servicing of an Omega of the same reference in this blog article:
Movement: Omega 564 chronometer with automatic winding 24 jewels - quick date adjustment (at the last click)
Bracelet: Omega 1040 "Bricks" 19 mm endlinks 518 for a wrist with a maximum circumference of 17.5 cm
Condition : Superb condition, this watch has never been polished. The acrylic crystal has been replaced with a generic crystal. Very good condition for its age. The movement has been checked and regulated, this Omega runs perfectly.
