The Omega Seamaster De Ville 1280009 (often associated with variations like the 165.020 or US-market reference B6671) is a prestigious mid-1960s dress watch that represents the transitional period before the De Ville became a standalone collection in 1967. This specific configuration features a solid 18k gold case and the caliber 563 automatic movement.

• Case Material: Solid 18k yellow gold with a polished finish and the iconic Seamaster hippocampus (seahorse) motif on the case back.

• Case Diameter: 34mm, which was a standard size for elegant men's watches in the 1960s.

• Movement: Omega Caliber 563.

  • Type: In-house automatic (self-winding).

  • Jewels: 17 jewels (specifically produced for the US market to navigate higher import duties on higher jewel counts).

  • Features: Includes a quickset date function operated by repeatedly pulling the crown out.

  • Performance: 50-hour power reserve and a frequency of 19,800 vph.

• Dial: Silver-colored dial with applied gold hour indices and matching hands; often protected by shatterproof plexiglass.

• Case Design: Typically utilizes a Unishell (Monocoque) case, meaning it is a single solid piece where the movement must be accessed through the front (crystal side) to enhance water resistance against splashes.