Omega Constellation
Omega's chronometer watch for everyday and the office, with an observatory under stars on the caseback.
The Constellation came out in 1952 to show off Omega's successes in the precision trials at the observatories. The 1982 model, the Manhattan, had four claws holding the crystal in place.
Materials: Steel or gold; self-winding chronometer movement
Manufacture: Made in Biel; every movement was tested as a chronometer.
The medallion with an observatory and eight stars on the caseback.
The dial sloping towards the edge, known as pie-pan.