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

Omega - 311.93.44.51.99.001 · $7,700

Up for sale is an Omega Speedmaster Grey Side Of The Moon - GSOTM - Grey Dial - 44mm watch that functions perfectly mechanically.

Condition: Great condition, small chip on edge of case back
Case Size: 44mm diameter
Case Back Condition: small chip at 9-o'clock

Posted at

Feb 7, 2026, 11:30 AM

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BNIB 2026 Omega Speedmaster Moonwatch Professional White $7,999

Omega - 310.30.42.50.04.001 · $7,999

The Omega Speedmaster Moonwatch Professional features a glossy white lacquered dial, black markers, and red 'Speedmaster' text. It uses the updated 3861 movement with a sapphire crystal for a more modern look.

Condition: Brand new in box with no issues
Case size: 42mm
Case thickness: 13.2mm
Lug width: 20mm

Posted at

Feb 7, 2026, 11:13 AM

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Omega Speedmaster Date 3210.50.00

Omega - 3210.50.00 · $2,500

A Omega Speedmaster Date in excellent condition, featuring a 7.5” wrist size and 7 removable links.

Condition: Excellent condition
Bracelet stretch: no
Number of links: 7
Links removable: yes

Posted at

Feb 7, 2026, 9:04 AM

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Omega Speedmaster 38 Black Dial 2023

Omega - Speedmaster 38 · $3,800

This Omega Speedmaster 38 black dial blends the heritage of the 'Moonwatch' with refined, wearable proportions. It is powered by the Co-Axial Calibre 3330 and features a date window at 6 o'clock, 100m water resistance, and an iconic Seahorse medallion caseback.

Condition: Very Good
Movement: Co-Axial Calibre 3330
Water resistance: 100m
Depth rating: 10bar

Posted at

Feb 6, 2026, 3:31 PM

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Omega Speedmaster Blue 32128000

Omega - 32128000 · $2,999

A super-hard-to-find Omega Speedmaster Blue from 2016 with a stainless steel case diameter of 39mm.

Case diameter: 39mm

Posted at

Feb 6, 2026, 3:20 PM

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Omega Speedmaster 38 Co-Axial Chronograph 38mm Brown Dial 324.23.38.50.02.002

Omega - 324.23.38.50.02.002 · $5,600

For sale is an Omega Speedmaster 38 Co-Axial Chronograph with a 38mm brown dial. The watch is in excellent condition and comes with its original packaging including inner & outer boxes, manual, hang tag, date adjustment tool, Pictogram card, and warranty card.

Condition: Very good, rated at 9.9/10
Included Accessories: Inner & outer Omega boxes, manual, hang tag, date adjustment tool, Pictogram card, warranty card
Warranty Date: 2023

Posted at

Feb 6, 2026, 10:31 AM

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Omega Speedmaster 38 Co-Axial Chronograph Grey Dial 324.32.38.50.06.001

Omega - 324.32.38.50.06.001 · $4,550

This Omega Speedmaster 38 Co-Axial Chronograph features a grey dial and is in very good condition, rated at 9.8/10.

Condition: In very good condition, rated at 9.8/10
Included Accessories: Inner & outer Omega boxes, manual, microfibre cloth, hang tag, caseback sticker, pictogram card, and warranty card (dated 2022)
Condition Rating: 9.8/10

Posted at

Feb 6, 2026, 10:28 AM

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Omega Speedmaster Moonwatch Professional O31030425001004 ♦️Brand New 2026♦️

Omega - O31030425001004 · $11,800

This Omega Speedmaster Moonwatch Professional features a brand new model from Q1 2026, complete with its full set including the box and papers.

Condition: Brand New
Has Box And Papers: Yes
Year Of Manufacture: 2026
Comes With Full Set: True

Posted at

Feb 6, 2026, 3:09 AM

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2019 Omega Speedmaster (FOIS) - 311.32.40.30.01.001 - Box and Papers!

Omega - 311.32.40.30.01.001 · $4,495

This is a 2019 Omega Speedmaster 'First Omega in Space' (FOIS) model, featuring a classic straight-lug case and vintage-inspired design. It's one of the favorite speedmasters among collectors due to its sharp look that fits any occasion.

Condition: pre-owned, fantastic with very minimal wear
Case size: 39.7mm diameter
Edition: Numbered Edition

Posted at

Feb 5, 2026, 9:24 PM

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