Vintage Omega Seamaster Cosmic 2000 DayDate Automatic 166.0129 - 38mm - 1974

This vintage Omega Seamaster Cosmic 2000 was produced in 1974 and features a silver dial with a vertical brushed finish and a DayDate function, with weekdays displayed in English. Both the day and date can be quickset thanks to the caliber 1022 automatic movement, which was overhauled in November 2025 and now runs well with accurate timekeeping.

The stainless steel case retains most of its original polish, and the caseback shows the well-visible, unpolished Seamaster Hippocampus logo. With a width of 38mm and a thickness of 11mm, it has a substantial wrist presence for a vintage model, giving it a sporty character. The overall condition is great.

 Year of production: 1974

 Serial number: 38.624.849

 Model number: 166.0129

 Case dimensions.

  - Width excluding crown: 38mm

  - Width including crown: 40,5mm

  - Lug to lug: 45mm

  - Thickness: 11mm

 Lugs width: 20mm

 Strap: A brown calf leather strap. (Fits a 12 to 20cm wrist)

Total head-only weight: 51,3g

 Country of origin: Switzerland 

 Movement: Cal. 1022 Automatic

 Service information: Movement overhauled in November 2025. Runs and functions well. (~-6s/d, ~241amp, ~0.4ms b/e)

Internal code: BTW 1196