Chase Hattan Watches has dated this Omega Seamaster Cosmic Watch to the 1960s.
A true and authentic vintage Omega Seamaster Cosmic reference 166.036, presented here as an honest, original example.

Dating to 1969, this watch appears to retain all its original components, offering a genuine snapshot of Omega’s late‑60s design and engineering.
Key Details
• Model: Omega Seamaster Cosmic
• Reference: 166.036

• Year: 1969
• Case Size: Approx. 35mm
• Case Material: Stainless steel
• Case Shape: Barrel
• Dial: Silver
• Hour Markers: Baton style
• Hands: Silver tone
• Day/Date: At 3 o’clock (English)
• Crystal: Acrylic

• Movement: Omega automatic
• Water Resistance: Not guaranteed due to age
• Guarantee: 12‑month mechanical guarantee
Condition Report
Case: Unpolished with visible marks, scratches and blemishes throughout, consistent with age.

Dial: Original silver dial with honest vintage wear and character.
Hands & Markers: Original and well matched.
Crystal: Original acrylic showing wear; can be polished or replaced upon request.
Overall: A completely honest and untouched vintage example.

Working Order
Running at approximately -20 seconds per day.
Operating correctly overall.
Servicing can be carried out upon request for an additional cost.
Supplied with a 12‑month mechanical guarantee.
Our View

This is exactly the type of watch purists look for — original, unpolished and full of character. The Seamaster Cosmic line offers a slightly different take on the classic Seamaster, with its barrel case and integrated feel.
Rather than being over‑restored, this example tells its story honestly through its wear. For those who appreciate originality over perfection, this is a fantastic piece with charm and authenticity.
Chase Hattan Watches has dated this Omega Seamaster Cosmic Watch to the 1960s.
Specialists in vintage, military and luxury watches
You can view the stock and full dealer information on the Chase Hattan Watches Profile Page