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Seamaster Cosmic from the late 1960s
This Omega Seamaster Cosmic dates from circa 1969 and showcases the era’s clean, streamlined approach with a unishell, front-opening steel case and a silver sunburst dial. Its applied baton markers, date at three and acrylic crystal reflect period-correct details. Inside beats the automatic Caliber 565, a 24-jewel member of Omega’s robust 500-series known for quick-set date functionality. With a signed crown and a long steel bracelet fitted for wear, the watch arrives recently serviced, offering contemporary collectors a mechanically refreshed example of late‑60s Omega build and design.
Watch dossier
Important details, without the clutter.
01Specifications+
- Brand / model
- Omega Omega Seamaster Cosmic Ref. 166.026
- Reference
- 166.026
- Estimated production
- Circa 1969
- Case material
- Steel
- Case diameter
- 35 mm
- Lug-to-lug
- 38 mm
- Thickness
- 10 mm
- Dial
- Original, silver sunburst with applied baton hour markers, date at 3, T SWISS MADE T at 6
- Crystal
- Acrylic (period-correct)
- Crown
- Signed
- Strap / bracelet
- Long steel bracelet (non-Omega) with extra links
- Movement
- Automatic
- Caliber
- Caliber 565
- Jewels
- 24
02Service & provenance+
Last serviced: 05 March 2026
The service includes the following operations: • Disassembly of the watch • Movement overhaul: dismantling • Cleaning, reassembly and lubrication • Use of Moebius synthetic oils • Ultrasonic cleaning of the case • Reassembly of the case and the watch • Final technical and aesthetic checks
03Delivery & returns+
Current store policies apply to this purchase.
Included with the watch