Omega Speedmaster Speedmaster Professional Moonwatch 3861 Sedna Gold - Ruby / Black - Ruby / Bracelet

Reference 310.55.42.50.51.001

Omega Speedmaster Professional Moonwatch 3861 Sedna Gold - Ruby / Black - Ruby / Bracelet

About this watch

The Omega Speedmaster Professional Moonwatch 3861 Sedna Gold is a stunning blend of luxury and functionality, with its Sedna gold construction and intricate chronograph features. The watch's sheer elegance is undeniable, with a black sunburst finish contrasting beautifully with gem-set indexes and ruby accents. Certified as a Master Chronometer by METAS, the Omega caliber 3861 movement is an engineering marvel, resistant to magnetic fields up to 15,000 gauss. With small seconds, hours, and minutes hands, the chronograph functionality offers precision timing. The watch's durability is also noteworthy, with sapphire glass adding scratch resistance. The Sedna gold bracelet ensures a secure fit, while its adjustability makes it comfortable for wearers of all wrist sizes. This timepiece is not just a luxury item but a conversation starter, status symbol, and piece of horological history.

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Key Features

Omega caliber 3861 movement with Co-Axial escapement and silicon balance spring
Sedna gold construction with gem-set indexes and ruby accents
50m water resistance with sapphire glass scratch resistance
Chronograph functionality with small seconds, hours, and minutes hands
Adjustable Sedna gold bracelet for secure fit on all wrist sizes

Specifications

Brand

Omega

Family

Speedmaster

Model

Speedmaster Professional Moonwatch 3861 Sedna Gold - Ruby / Black - Ruby / Bracelet

Reference

310.55.42.50.51.001

Movement

3861

Movement Features

Small Seconds, Hours, Minutes
Chronograph
Chronometer

Case

Sedna Gold 42mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

Current Listings

Omega Speedmaster ’57 Black Dial (2024) - excellent condition - $5750

Omega - 332.10.41.51.01.001 · $5,750

A modern interpretation of the original 1957 Speedmaster with a black dial, Broad Arrow hands, and a slimmer case. The watch features a manual wind Co-Axial Master Chronometer movement and has a water resistance of 50m.

Condition: excellent
Case Size: 40.5mm diameter
Thickness: ~12.99 mm
Movement Type: manual wind, Co-Axial Master Chronometer

Posted at

Mar 7, 2026, 6:00 PM

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Omega Speedmaster Moonphase Chrono 18k Sedna Gold & Steel 304.23.44.52.13001 B&P

Omega - 304.23.44.52.13001 · $10,195

This Omega Speedmaster Moonphase Chrono features a brown sun-brushed dial with diamond polished indexes and hands, accurate moonphase indication, and Ceragold tachymeter scale.

Movement: Meta certified Co-Axial Master Chronometer 9904
Case material: Stainless steel-18K Sedna gold
Diameter: 44.25 mm

Posted at

Mar 7, 2026, 4:19 PM

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Omega Speedmaster Professional Moonwatch Full Steel Yellow Patina Original Step Tritium Dial (Unpolished)

Omega - 145.022-69 · $5,235

This Omega Speedmaster Professional Moonwatch is a strong example of the highly regarded reference 145.022-69, featuring a razor-sharp case and crisp edges with excellent overall definition.

Condition: Unpolished, original condition
Size: 42mm
Year: 1969
Bezel condition: Signs of age and light fading

Posted at

Mar 7, 2026, 2:44 PM

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Omega Speedmaster Grey Side Of The Moon - GSOTM - Grey Dial - 44mm - 311.93.44.51.99.001

Omega - 311.93.44.51.99.001 · $7,600

Omega Speedmaster Grey Side Of The Moon with a grey dial and 44mm case size.

Condition: great, with small chip on edge of case back
Case Size: 44mm diameter

Posted at

Mar 7, 2026, 1:53 PM

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Omega Speedmaster Reduced 3510.50 Excellent Condition + Serialized Hand Tag

Omega - 3510.50 · $2,750

For sale is an Omega Speedmaster Reduced in excellent condition with hardly any signs of wear, it runs great and functions properly.

Condition: Excellent Condition
Payment Methods Accepted: multiple (including crypto) with small fee
Meeting Options: local meetup or shipped

Posted at

Mar 7, 2026, 1:39 PM

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Omega Speedmaster Racing 329.30.44.51.04.001 COMPLETE SET 2024

Omega - 329.30.44.51.04.001 · $6,350

This Omega Speedmaster Racing features a white dial and comes with the complete set, including double boxed packaging and documentation.

Condition: Excellent
Box and papers included: complete set
Warranty card date: 2024
Payment methods accepted: crypto, other payment methods

Posted at

Mar 7, 2026, 1:30 PM

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Omega Speedmaster Professional Moonwatch Hesalite cal. 3861

Omega - Speedmaster Professional Moonwatch Hesalite cal. 3861 · $5,500

This Omega Speedmaster Professional Moonwatch features a hesalite crystal, closed steel caseback, and comfortable quick adjust clasp bracelet. It has the most up-to-date 3861 caliber and retains the original design language and proportions.

Condition: clean piece with minimal wear and no condition notes
Bracelet size limit: 7in
Dimensions: 42mm X 20 lug width X 47h (lug to lug)
Crystal type: hesalite crystal with 13.8cc

Posted at

Mar 7, 2026, 12:48 PM

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Omega "Silver Snoopy" Speedmaster 2025

Omega - 310.32.42.50.02.001 · $15,299

This Omega Speedmaster Silver Snoopy Award is a commemorative edition that pays tribute to Omega's crucial role in the safe return of Apollo 13, featuring a highly detailed caseback animation of Snoopy and a mission-inspired design language.

Condition: Brand new, unworn
Case size: 42mm diameter
Water resistance: 50m depth rating

Posted at

Mar 7, 2026, 12:44 PM

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OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 🔥$10,000🔥

OMEGA - 311.92.44.30.01.001 · $10,000

The OMEGA Speedmaster 'Dark Side of the Moon' Apollo 8 commemorates the 50th anniversary of the Apollo 8 mission, featuring a black ceramic case and a skeletonized dial with laser-ablated lunar surface details.

Condition: UNWORN
Case material: black ceramic
Case diameter: 44.25mm
Movement: Calibre 1869

Posted at

Mar 6, 2026, 8:25 PM

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