The Constellation watch is a staple in Omega's catalogue, they came with Omega's top grade Chronometer movements.  This ‘C case reference 168.027 is a gorgeous and classic timepiece. The watch was never polished and looks amazing.
 
*** The pictures may show the reflection of the camera lens, black spots mostly ***

Details: Omega 
Model: Constellation
Reference: 168.027
Year: 1967
Material: Stainless Steel
Dimensions: 35mm
Crystal: Hesalite
Movement: Automatic Cal 564
Bracelet/Strap: Wristwatchme band
Box/Papers: No/No