Omega Speedmaster Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet

Reference 310.55.42.50.13.001

About this watch

The Omega Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet is a masterpiece of horology, blending art, history, and cutting-edge technology. Crafted from Sedna Gold, this watch boasts a unique color that's both warm and striking. Its round shape and sunburst brown finish give it a luxurious feel, while the diamond-set bezel adds a touch of elegance. The 3861 is equipped with a chronograph feature, allowing you to measure elapsed time with precision. At its heart lies the Omega caliber 3861, an updated version of the legendary caliber 861/1861, featuring a co-axial escapement and silicon balance spring for accuracy and reliability. Master Chronometer certified by METAS, this watch has undergone rigorous testing to withstand magnetic fields of up to 15,000 gauss. Its sleek design and exceptional craftsmanship make it a standout in any collection. Whether you're at a formal event or a casual outing, this watch is sure to turn heads.
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Key Features

  • Sedna Gold case
  • Manual-winding chronograph movement
  • Co-axial escapement and silicon balance spring
  • Master Chronometer certified by METAS
  • Diamond-set bezel
  • Water resistance up to 50 meters
  • 42.00 mm diameter and 13.18 mm height

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet
Reference
310.55.42.50.13.001
Movement
3861
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph
  • Chronometer
Case
Sedna Gold 42mm
Dial Color
Brown
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] 10/24 Omega Speedmaster White Dial Complete Set *$7,400 + label*

10/24 Omega Speedmaster White Dial Complete Set *$7,400 + label*

The Omega Speedmaster White Dial is a complete set, including micro-adjust clasp, with no issues and minimal desk rash on the clasp.

  • Condition: Pre-owned with minimal desk rash on clasp, runs and functions perfectly
  • Year Of Manufacture: 2024
  • Clasp Type: micro-adjust
Posted at
Jun 13, 2025, 9:18 PM
Active
[WTS] Omega Speedmaster chocolate Ref 311.30.42.30.13.001

Omega Speedmaster chocolate Ref 311.30.42.30.13.001

Unique Speedmaster chocolate dial ref 311.30.42.30.13.001, this model was only made in limited numbers and currently discontinued.

  • Bracelet length: 6.3 inch
  • New bracelet included: true
Posted at
Jun 13, 2025, 8:48 PM
Active
Omega Speedmaster Professional Apollo 11 L.E. 30th Anniversary

Omega Speedmaster Professional Apollo 11 L.E. 30th Anniversary

Omega - 3560.50.00 · $4,299.004
The Omega Speedmaster Professional Moonwatch 30th anniversary Apollo XI is a limited edition of 9,999 pieces, introduced in 1999 to commemorate the 30th anniversary of the Apollo 11 mission. It features a special caseback engraving with an Apollo 11 patch and is similar to the regular 3570.50.00 in all details.

  • Condition: Excellent pre-owned condition
  • Lug width: 20mm
  • Lug-to-lug: 48.2mm
  • Case size: 42 mm
Posted at
Jun 13, 2025, 8:07 PM
Active
[WTS] Omega Speedmaster Schumacher

Omega Speedmaster Schumacher

Omega - 3510.12.00 · $2,900
Selling a Omega Speedmaster Schumacher, comes as watch only.

  • Shipping: FedEx next day shipping included
Posted at
Jun 13, 2025, 7:09 PM
Active
Omega Speedmaster Racing - White Dial - 329.30.44.51.04.001 ( new / 2025 )

Omega Speedmaster Racing - White Dial - 329.30.44.51.04.001 ( new / 2025 )

Omega - 329.30.44.51.04.001 · $7,550.008
A brand new Omega Speedmaster Racing Master Co-Axial in White Dial, featuring a 44.25mm stainless steel case and master co-axial chronometer.

  • Condition: Brand new / complete set
  • Case size: 44.25mm diameter
  • Movement: Master Co-Axial 9900
Posted at
Jun 13, 2025, 3:07 PM
Active
Omega Speedmaster Moonwatch 3861 - White - 310.30.42.50.04.001 ( excellent )

Omega Speedmaster Moonwatch 3861 - White - 310.30.42.50.04.001 ( excellent )

Omega - 310.30.42.50.04.001 · $7,350.007
This Omega Speedmaster Moonwatch Professional features a 42mm stainless steel case and a white dial with sapphire crystal.

  • Condition: Excellent
  • Case size: 42mm
  • Movement: Omega Master Chronometer Movement
Posted at
Jun 13, 2025, 3:06 PM
Active
Omega Speedmaster Racing - White Dial - 329.30.44.51.04.001 (excellent / 2024)

Omega Speedmaster Racing - White Dial - 329.30.44.51.04.001 (excellent / 2024)

Omega - 329.30.44.51.04.001 · $6,450.006
Up for sale is an Omega Speedmaster Racing Master Co-Axial in White Dial, reference # 329.30.44.51.04.001. It comes with all boxes, papers, booklets, and Omega Warranty Card dated November 2024.

  • Condition: Excellent
  • Case Size: 44.25mm
  • Material: Stainless Steel
  • Movement: Master Co-Axial 9900 Chronometer
Posted at
Jun 13, 2025, 3:05 PM
Active
Omega Speedmaster '57 - 40.5mm Co-Axial - 332.10.41.51.01.001 ( excellent )

Omega Speedmaster '57 - 40.5mm Co-Axial - 332.10.41.51.01.001 ( excellent )

Omega - 332.10.41.51.01.001 · $6,250.006
This Omega Speedmaster '57 Novelties 2022 is a stainless steel watch with a 40.5mm case and 9906 Master Co-Axial Movement. It comes complete with all boxes, papers, booklets, hang tag and Omega Warranty Card dated September 2022.

  • Condition: Excellent Condition
  • Case size: 40.5mm
  • Movement type: 9906 Master Co-Axial
Posted at
Jun 13, 2025, 3:04 PM
Active
[WTS] Omega Speedmaster Speedy Tuesday - MINT UNWORN $14,500

Omega Speedmaster Speedy Tuesday - MINT UNWORN $14,500

Up for sale is THE Speedy Tuesday ST1, an UNWORN and MINT example of this hard-to-find watch.

  • Condition: Mint Unworn
  • Case material: Metal
  • Features: Includes box, warranty cards, accessories
Posted at
Jun 13, 2025, 1:35 PM
Active