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

[US] Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm - 311.30.40.30.01.001 - Full Set

Omega - 311.30.40.30.01.001 · $15,550

Up for sale is an Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm, functions perfectly mechanically.

Condition: pristine condition with minor hairlines on clasp, case, and bracelet
Diameter: 39.7mm

Posted at

May 8, 2026, 8:05 AM

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Omega Speedmaster Hesilate Ref. 310.32.42.50.01.001 Full Set + Original Receipt

Omega - 310.32.42.50.01.001 · $4,999

This Omega Speedmaster Moonwatch Professional features a Co-Axial Master Chronometer Caliber 3861 and is in excellent overall condition, with the notable exception of a very minor mark on the Hesalite crystal.

Condition: Excellent overall condition with minor mark on Hesalite crystal and light signs of normal wear on case
Movement: Co-Axial Master Chronometer Caliber 3861
Crystal type: Hesalite
Caseback type: Aftermarket exhibition caseback (original solid also included)

Posted at

May 8, 2026, 8:00 AM

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[US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set

Omega - 310.30.42.50.04.001 · $7,925

Up for sale is an Omega Speedmaster Moonwatch Professional - White Dial - Full Set Watch is in pristine condition and functions perfectly mechanically, without issue.

Condition: pristine condition with minor hairlines on clasp, case, and bracelet
Water Resistance: 30m
Box Contents: inner box, outer box, removable travel case, historical booklet, user manual, microfiber cloth, master chronometer card, warranty card

Posted at

May 8, 2026, 7:59 AM

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Omega Speedmaster Professional (310.30.42.50.01.002)

Omega - 310.30.42.50.01.002 · $6,800

This Omega Speedmaster Professional features a black dial on a stainless steel bracelet, with a sapphire crystal and manual caliber 3861 movement.

Condition: Excellent
Case size: 42mm diameter
Case material: Stainless Steel
Bracelet material: Stainless Steel

Posted at

May 8, 2026, 7:11 AM

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Omega Speedmaster Snoopy New 4/2026, $15.2k!!

Omega - 310.32.42.50.02.001 · $15,200

This Omega Speedmaster is a limited edition 'Silver Snoopy Award' 50th Anniversary model, featuring a silver dial with blue accents and a Snoopy medallion.

Condition: Brand New In Box (BNIB)
Case size: 42mm
Movement type: Manual Wind
Depth rating: 50m

Posted at

May 8, 2026, 12:50 AM

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