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
50

Current Listings

[WTS] Omega Speedmaster Mark II. 327.10.43.50.01.001.

Omega Speedmaster Mark II. 327.10.43.50.01.001.

Omega - 327.10.43.50.01.001 · $3,895
This Omega Speedmaster Mark II is a high-end watch with a large wrist size. It's in very good condition and comes with additional photos available upon request.

  • Condition: Very good condition
  • Wrist size: large
Posted at
Jan 27, 2026, 9:02 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster. 39mm. Special Dial.

Omega Speedmaster. 39mm. Special Dial.

Omega · $2,450
This is an Omega Speedmaster with a 39mm case, featuring a special dial and automatic movement.

  • Case size: 39mm diameter
  • Dial texture: Gorgeous texture dial
Posted at
Jan 27, 2026, 7:46 PM
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View listing on r/WatchExchange
[WTS] 2026 Omega Speedmaster Sapphire Sandwich - BRAND NEW! *$7300*

2026 Omega Speedmaster Sapphire Sandwich - BRAND NEW! *$7300*

Omega - Speedmaster Sapphire Sandwich · $7,300
A brand new Omega Speedmaster with a black dial, comes with full kit and warranty.

  • Condition: Brand New
  • Diameter: 40mm
Posted at
Jan 27, 2026, 5:40 PM
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[WTS] Omega Speedmaster 3861 'Hesalite' edition Warranty dated 2020 $3900

Omega Speedmaster 3861 'Hesalite' edition Warranty dated 2020 $3900

Omega - 3861 · $3,900
Warranty dated 2020.

Posted at
Jan 27, 2026, 11:14 AM
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OMEGA SPEEDMASTER PROFESSIONAL MOONWATCH 35735000 also known as Sapphire Sandwich. Warranty card dated 2011. Comes with all accessories, box and papers as bought new. Can provide references to serious buyer. [WTS] $5750

OMEGA SPEEDMASTER PROFESSIONAL MOONWATCH 35735000 also known as Sapphire Sandwich. Warranty card dated 2011. Comes with all accessories, box and papers as bought new. Can provide references to serious buyer. $5750

OMEGA - 35735000 · $5,750
This Omega Speedmaster Professional Moonwatch, also known as the Sapphire Sandwich, is a pre-owned timepiece with a warranty card dated 2011. It comes with all original accessories, box, and papers.

  • Condition: New with accessories and box
  • Year: 2011
Posted at
Jan 27, 2026, 3:35 AM
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[WTS] Omega Speedmaster 3520.53 Box, Manual, Card - $2,850

Omega Speedmaster 3520.53 Box, Manual, Card - $2,850

Omega - 3520.53 · $2,850
This is a Omega Speedmaster 3520.53 Full Kit in good condition, featuring an automatic movement and a steel case on an original Omega Steel bracelet.

  • Condition: Good condition with usage marks and minimal oxidation on subdials
  • Case size: 39mm
  • Bracelet size range: 7.25-7.5 inch wrists
  • Movement type: Automatic
Posted at
Jan 26, 2026, 9:09 PM
Active
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[WTS] Omega Speedmaster Broadarrow. $3450 only !! Very Accurate...

Omega Speedmaster Broadarrow. $3450 only !! Very Accurate...

Omega - Speedmaster Broadarrow · $3,450
The Omega Speedmaster Broadarrow is a high-end watch for sale, described as very accurate.

  • Shipping: Fedex with insurance
  • Location: NJ USA
Posted at
Jan 26, 2026, 7:41 PM
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[WTS] Omega Speedmaster Legend Schumacher ref 3506.61 like new *PRICE DROP*

Omega Speedmaster Legend Schumacher ref 3506.61 like new *PRICE DROP*

Omega - 3506.61 · $4,350
This Omega Speedmaster Legend Schumacher edition features a striking red dial, engraved case back, and stainless steel bracelet with full links.

  • Condition: Like new, unworn
  • Case materials: stainless steel
  • Bracelet size: full links attached
Posted at
Jan 26, 2026, 7:01 PM
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[WTS] Omega Speedmaster Reduced ref 3222.80 like new *PRICE DROP*

Omega Speedmaster Reduced ref 3222.80 like new *PRICE DROP*

Omega - 3222.80 · $3,350
This Omega Speedmaster Day-Date ref 3222.80 features a vibrant blue dial, stainless steel bracelet, day, date, month, chronograph, and 24-hour indicators.

  • Condition: like new
  • Case material: stainless steel
  • Bracelet type: stainless steel with full links
Posted at
Jan 26, 2026, 6:53 PM
Active
View listing on r/WatchExchange