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 Dark Side of the Moon - 311.92.44.51.01.006 - Price Reduced ‼️🌙 ✈️

Omega Speedmaster Dark Side of the Moon - 311.92.44.51.01.006 - Price Reduced ‼️🌙 ✈️

Omega - 311.92.44.51.01.006 · $6,750
The Omega Speedmaster Dark Side of the Moon 'Vintage Black' features a brown dial with blackened hands, a brushed ceramic bezel, and a brown leather strap. It has a vintage aesthetic with a dark dial and tan indices. The watch is running at +/−0 seconds per day.

  • Condition: Overall good condition, light strap wear and some light scratches
  • Retail Price: $12,000
  • Amp: 275
  • Movement Accuracy: +/-0 seconds per day
Posted at
Oct 22, 2025, 4:33 PM
Active
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[WTS] Omega Speedmaster Michael Schumacher The Legend Collection $3,499

Omega Speedmaster Michael Schumacher The Legend Collection $3,499

Omega - 321.30.44.50.01.001 · $3,499
This Omega Speedmaster Michael Schumacher The Legend Collection celebrates motorsport and Omega ambassador Michael Schumacher with a unique design, featuring a checkered carbon fiber dial, red accents, and a bezel with his racing achievements. It's powered by Omega's automatic caliber 3313, a column wheel chronograph movement.

  • Condition: Great pre-owned condition with minor wear marks
  • Case size: 44mm
  • Lug width: 21mm
  • Water resistance: 100m depth rating
Posted at
Oct 22, 2025, 11:44 AM
Active
View listing on r/WatchExchange
[WTS] Open Card Omega Speedmaster Professional Moonwatch “Sapphire Sandwich” 310.30.42.50.01.002 — Excellent Condition, Box & Papers

Open Card Omega Speedmaster Professional Moonwatch “Sapphire Sandwich” 310.30.42.50.01.002 — Excellent Condition, Box & Papers

Omega - 310.30.42.50.01.002 · $6,300
The Omega Speedmaster Professional Moonwatch “Sapphire Sandwich” is a modern take on one of the most iconic chronographs ever made, featuring a black step dial and sapphire crystal front and back.

  • Condition: Excellent condition
  • Case diameter: 42mm
  • Lug to lug: 47.5mm
  • Thickness: 13.2mm
Posted at
Oct 22, 2025, 9:10 AM
Active
View listing on r/WatchExchange
[WTS][US] Omega Speedmaster Chronoscope - White Panda Dial - 43mm - 329.30.43.51.02.002

[US] Omega Speedmaster Chronoscope - White Panda Dial - 43mm - 329.30.43.51.02.002

Omega - 329.30.43.51.02.002 · $5,350
Up for sale is an Omega Speedmaster Chronoscope - White Panda Dial - 43mm watch that functions perfectly mechanically.

  • Condition: fantastic with minor hairlines
  • Case size: 43mm
Posted at
Oct 22, 2025, 9:06 AM
Active
View listing on r/WatchExchange
Help/advice for selling my Omega Speedmaster [wts]

Help/advice for selling my Omega Speedmaster

The seller is looking for advice on how to securely sell their four-figure Omega Speedmaster, citing concerns about scams and bot warnings.

  • Watch Model: Speedmaster
  • Seller Type: eBay
Posted at
Oct 21, 2025, 9:20 PM
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[WTS] Omega Speedmaster Professional ( 310.30.42.50.01.001 ) - Like New!

Omega Speedmaster Professional ( 310.30.42.50.01.001 ) - Like New!

Omega - 310.30.42.50.01.001 · $4,895
A 42mm Omega Speedmaster Professional in amazing condition, with minimal wear and a complete set of accessories.

  • Condition: Like New
  • Case size: 42mm diameter
  • Movement type: automatic
Posted at
Oct 21, 2025, 5:42 PM
Active
View listing on r/WatchExchange
[WTS] 2025 Omega Speedmaster Moonwatch Sapphire Sandwich 310.30.42.50.01.002 Full Set

2025 Omega Speedmaster Moonwatch Sapphire Sandwich 310.30.42.50.01.002 Full Set

Omega - 310.30.42.50.01.002 · $7,000
A 2025 Omega Speedmaster Professional Moonwatch Sapphire Sandwich, purchased in January 2025 and running perfectly.

  • Condition: Excellent preowned condition with minor signs of wear
  • Year: 2025 (factory warranty until Jan 2030)
  • Size: 42mm diameter
  • Retail: $9000
Posted at
Oct 21, 2025, 4:37 PM
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[WTS] Omega Speedmaster Dark Side Moon Apollo 8 44mm Ceramic Box Papers 2024

Omega Speedmaster Dark Side Moon Apollo 8 44mm Ceramic Box Papers 2024

Omega - 310.92.44.50.01.001 · $11,950
A wonderful example of the Omega Speedmaster Dark Side Moon Apollo 8 model, featuring a black ceramic skeletonized dial and updated laser ablated moon surface. Paired with a Saturn V rocket constant seconds hand, this is one of the most detailed black ceramic watches to wear.

  • Condition: Mint condition, appears completely unworn
  • Case size: 44.25mm
Posted at
Oct 21, 2025, 4:34 PM
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[WTS] Omega Speedmaster Mark II

Omega Speedmaster Mark II

Omega - 145.014 · $2,650
A 70's Omega Speedmaster Mark II in great shape, keeping time and chronograph functioning as it should. The watch has a chunky case that balances out with the drape of the bracelet, making it wear well.

  • Condition: Excellent, with minor degradation of paint on hour counter hand
  • Case Dimensions: 42.5mm width x 45.5mm length x 15mm thickness
  • Bracelet Adjustability: expandable to accommodate wrists up to 6.75"
  • Water Resistance Status: not guaranteed
Posted at
Oct 21, 2025, 3:58 PM
Active
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