Omega Seamaster 166.0209 Cal.1020 — Vintage Watch 1978 — Pre-owned

Seamaster automatic with tropical dial — An iconic reference from the 70s

The Seamaster 166.0209 represents the essence of Omega watchmaking from the 1970s, with its renowned Cal.1020 automatic movement and timeless design. This vintage piece from 1978 embodies the legendary robustness of Omega dive watches, bearing the authentic marks of time: a dial tinted by tropical patina, a distinctive and highly sought-after feature among collectors. Every original detail—the Omega crystal engraved with the Ω, the period crown, the 35 mm case—tells the story of a watch that has spanned nearly five decades.

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This watch is a vintage Omega Seamaster 166.0209, an automatic calendar watch.

It is powered by the renowned automatic Cal. 1020 movement, featuring a dual calendar, hacking seconds, and quick-reset functions. The dial displays a distinct tropical weathering effect and even yellowing with age. This discoloration, caused by ultraviolet light and time, is often considered a unique hallmark of its era in the world of vintage watch collecting. It is a distinctive characteristic of this watch and makes it highly collectible.

[Brand] Omega

[Series] Seamaster

[Model] 166.0209

【Movement】Original 1020 Automatic Movement

[Crown] Original crown

[Crystal] Original Omega crystal, marked Ω

【Case Diameter】Case diameter 35 mm (excluding crown)

[Dial] Original dial

【Strap】Replacement steel strap and buckle, accommodating straps up to 20mm wide

[Year] Year: approximately 1978

[Condition] Condition: Timekeeping and functions are normal

【Notes】Notes: Manual + automatic. Pulling the crown out to the first position adjusts the date up and down; pulling the crown out further to the second position and turning the hands counterclockwise adjusts the day of the week.