Omega Constellation Constellation Co-Axial 38 White Gold / Diamond / Black

Reference 123.55.38.21.51.001

Omega Constellation Co-Axial 38 White Gold / Diamond / Black

About this watch

The Omega Constellation Co-Axial 38 (model 123.55.38.21.51.001) is an epitome of luxury and sophistication, boasting an impeccable design with a white gold case, gem-set bezel, and rich black dial. The watch features a robust automatic movement, the Omega caliber 8501, which boasts precision and innovation, including a Co-Axial escapement that reduces friction and enhances longevity. With a power reserve of approximately 60 hours, this chronometer is reliable and accurate. Its stunning design combines elegance with functionality, making it perfect for everyday wear or formal occasions. The watch displays hours, minutes, seconds, and date, while its Dauphine hands glide smoothly over the dial, providing clear visibility. With a water resistance of up to 100 meters, you can enjoy swimming, snorkeling, or other water activities without worrying about your timepiece. As a statement piece, this Omega Constellation Co-Axial 38 carries with it a legacy of excellence and a promise of reliability, making it a worthy addition to any collection.

Buy Now on Jomashop

This is an affiliate link

Key Features

White gold case
Gem-set bezel
Automatic movement (Omega caliber 8501)
Co-Axial escapement
Chronometer accuracy
Water resistance up to 100 meters
Dauphine hands

Specifications

Brand

Omega

Family

Constellation

Model

Constellation Co-Axial 38 White Gold / Diamond / Black

Reference

123.55.38.21.51.001

Movement

8501

Movement Features

Hours, Minutes, Seconds
Date
Chronometer, Co-Axial Escapement

Case

White Gold 38mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

100

Current Listings

Omega Constellation 168.005 Dog-leg Lugs Crosshair Tropical Dial — $1,400 (Serviced / Shipping / Tariff Covered)

Omega - 168.005 · $1,400

This Omega Constellation ref. 168.005 features a unique tropical dial with crosshair layout, well-matched hands and hour markers, and dog-leg lugs.

Condition: Great vintage condition
Movement Type: Automatic
Caliber: 561
Chronometer Certified: Yes

Posted at

Jan 27, 2026, 8:52 AM

Active

View listing on r/WatchExchange

Omega Constellation Pie Pan

Omega - Constellation Pie Pan · $1,800

Additional Details: Excellent condition, recently serviced Omega Constellation Pie Pan.

Condition: Excellent
Servicing status: recently serviced

Posted at

Jan 26, 2026, 5:43 PM

Active

View listing on r/WatchExchange

Omega Steel ‘Pie Pan’ Constellation Dog-Legged Lugs - Ref. 168.005 - Caliber 561 Automatic Date - From 1968 - $2200

Omega - 168.005 · $2,200

The Omega Constellation 'Pie Pan' features a robust caliber 561 automatic movement with date, sunburst dial, and signature dog-legged lugs. It has a great construction and feel to the well-defined case design, making it an excellent dressy statement piece.

Condition: Excellent, minor patina on logo and date window
Case size: 35mm (excluding crown)
Diameter: 40mm
Movement: Caliber 561 automatic date

Posted at

Jan 26, 2026, 1:13 PM

Active

View listing on r/WatchExchange

Omega Constellation C Shape - 168.017 Circa 1969 only for 775$ Shipped 🚢

Omega - 168.017 · $775

This Omega Constellation C Shape from 1969 features a stainless steel case with a 35mm diameter and an off-white dial.

Condition: Great (minor hairline scratches on case, little signs of aging on dial)
Case Size: 35mm
Movement: Automatic calibre 564
Crystal: Signed Omega crystal

Posted at

Jan 26, 2026, 8:08 AM

Active

View listing on r/WatchExchange

1966 Omega Constellation “Hidden Crown” ref. 168.004 (Cal. 561) – serviced Jun 2025 – $675 shipped

Omega - 168.004 · $675

A 1966 Omega Constellation ref. 168.004 with the sleek hidden crown case design, powered by the correct Omega Cal. 561 chronometer movement. The dial is original but shows signs of a past cleaning attempt. The watch has been serviced in June 2025.

Condition: Dial: original but shows signs of a past cleaning attempt; Case: original case, likely unpolished with honest scratches from normal wear. Movement serviced June 2025.
Case size without crown: 35mm
Movement caliber: Omega Cal. 561
Crystal type: new aftermarket replacement

Posted at

Jan 26, 2026, 7:57 AM

Active

View listing on r/WatchExchange

Omega Constellation 33mm 18kYG 166052/168033 MINT

Omega - 166052/168033 · $4,200

A mint Omega Constellation in 18k yellow gold, featuring a 33mm case size and a unique combination of reference numbers 166052 and 168033.

Condition: MINT
Case size: 33mm
Lug-to-lug: 39mm
Lug width: 19mm

Posted at

Jan 25, 2026, 1:44 PM

Active

View listing on r/WatchExchange

Omega Constellation 35mm 18K YG Champagne Arrowhead Pie-Pan Dial (Serviced), Ref. 2853 SC

Omega - 2853 SC

a 2 - 3 sentence summary of the Omega Constellation 35mm 18K YG Champagne Arrowhead Pie-Pan Dial (Serviced)

Condition: Serviced
Material: 18K Yellow Gold
Dial color: Champagne Arrowhead Pie-Pan Dial

Posted at

Jan 23, 2026, 9:55 PM

Active

View listing on r/WatchExchange

Omega Constellation Mini Two-Tone - 18K - MOP Dial - Ref. 795.1203 - Circa 1998

Omega - 795.1203 · $795

This is a classic 90s icon—the 'Cindy Crawford era' Constellation, featuring the signature 'griffes' on the 18k gold bezel and a lovely Mother of Pearl dial.

Condition: Great vintage condition, typical wear
Case size: 22.5mm
Bracelet material: Two-tone (steel and 18K)
Bezel material: 18k gold

Posted at

Jan 23, 2026, 12:51 AM

Active

View listing on r/WatchExchange

1968 Omega Constellation C-Case Chronometer Cal. 564 w Box & Paper – Serviced Jan 2026 – $1450 shipped

Omega - Cal. 564 · $1,450

A 1968 Omega Constellation C-Case Chronometer Cal. 564 is for sale, including its original box and papers. It has been serviced in January 2026.

Posted at

Jan 22, 2026, 9:29 PM

Active

View listing on r/WatchExchange