Omega

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For sale is a Swiss Made Omega Seamaster Cosmic Automatic men's watch with reference number 166.023, dating back to 1967 based on its serial number. This watch features a unishell case design that somewhat resembles Omega's classic "C-shape" case with fully integrated lugs. The advantage of such unishell cases - consisting of a single piece of metal - is that they are less susceptible to water damage: they do not have a traditional case back which would rely on rubber gaskets to keep the water out. Said stainless steel case measures 33mm in diameter and just under 11mm in thickness.

The dial on this particular example comes in a gorgeous silver sunburst finish, with so-called 'crosshair' lines dividing the dial in four even sections. The polished steel accents of the raised indices and hands match nicely with the dial colour, and a date window can be found at the 3 O'Clock position. Said date can be quickly adjusted by pulling the original crown, which features the Omega logo. Inside the watch we find a renowned caliber 565 automatic movement that is working perfectly.


The example sold here has been worn throughout its life, but is still in decent condition considering its age. You will certainly find wear marks on the case, but no overly coarse damage. Said case is unpolished and therefore in original shape, with sharp edges and radial sunburst finish. The watch face has stood the test of time well, with minor yet uniform signs of aging - most notably on the raised indices and hands. Please study the pictures in this listing well: they show the watch in the condition that it is in, with no digital enhancements to make it look better than it is. We are sure that you like honesty, and so do we.


The watch was lovingly restored with eye for authenticity, and has received a full service prior to being listed for sale. The movement was completely stripped down, cleaned and lubricated, and is working perfectly. The case was cleaned but not polished, to maintain its sharp edges and lines. The crystal is brand new and all original: an Omega PZ5082 with Omega hallmark in the center, and a ridge around the outer edge that allows the crystal to be removed with the correct Tool 105 in order to access the movement. The watch comes fitted to a brand new generic black perforated leather strap with generic stainless steel buckle, ready to wear. Sold as watch only: sadly no original box or paperwork are present with this piece.

Your new timepiece will be packaged with great care, and will be shipped out as fast as possible. We usually ship the same day your payment comes in, and provide full insurance as well as a tracking code for all of our packages. If you have any questions regarding the item or our services, please do not hesitate to reach out. We'll gladly assist as soon as we get the chance.

 Seamaster Cosmic Automatic - Ref. 166.023 Vintage Stainless Steel Mens Watch

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Basic Info

Brand

Omega

Model

Seamaster Cosmic

Reference number

166.023

Dealer product code

W 417

Movement

Automatic

Case material

Steel

Bracelet material

Leather

Year of production

1967 (Approximation)

Condition

Used (Fair)

The item shows major, visible signs of wear like scratches and dents.

Most Recent Servicing

July 15, 2025

Serviced in-house

Scope of delivery

No original box, no original papers

Gender

Men's watch/Unisex

Location

Belgium, ANTWERPEN

Price

€995

Availability

Item is in stock

Caliber

Movement

Automatic

Caliber/movement

Omega 565

Power reserve

38 h

Number of jewels

24

Case

Case material

Steel

Case diameter

33 mm

Thickness

11 mm

Water resistance

Not water resistant

Bezel material

Steel

Crystal

Plexiglass

Dial

Silver

Dial numerals

No numerals

Bracelet/strap

Bracelet material

Leather

Bracelet color

Black

Bracelet length

200 mm (120 mm / 80 mm)

Bracelet thickness

4 mm

Lug width

18 mm Size guide

Clasp

Buckle

Clasp material

Steel

Buckle width

16 mm

Functions

Date

Other

Central seconds, Quick Set, Only Original Parts, Vintage

w 417

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