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

2002 Omega Speedmaster "Reduced" Ref. 3510.50 with Box & Papers

2002 Omega Speedmaster "Reduced" Ref. 3510.50 with Box & Papers

Omega - 3510.50 · $3,050
The Omega Speedmaster Reduced Automatic is a Luminova example in excellent pre-owned condition with a dial and hands in good condition, measuring 39mm in diameter.

  • Condition: Excellent
  • Case Width: 39mm
  • Strap Length: 7.5 inches
  • Movement: Automatic
Posted at
Mar 27, 2025, 1:32 PM
Active
Omega Speedmaster Dark Side of the Moon -311.92.44.51.01.003 - Ceramic - 44mm

Omega Speedmaster Dark Side of the Moon -311.92.44.51.01.003 - Ceramic - 44mm

The Omega Speedmaster 'Dark Side of the Moon' is a ceramic watch with a black dial, measuring 44mm in diameter. It features a co-axial chronograph movement and comes with an Omega box set, warranty card, and manual.

  • Condition: Pre-Owned (Mint Grade)
  • Case size: 44mm
  • Bracelet type: Black Canvas with Tang Buckle
  • Movement: Co-Axial Chronograph
Posted at
Mar 26, 2025, 8:13 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 )

This Omega Speedmaster Moonwatch Professional features a 42mm stainless steel case, white dial, and sapphire crystal.

  • Condition: Excellent condition
  • Case size: 42mm diameter
  • Movement type: Omega Master Chronometer Movement
Posted at
Mar 26, 2025, 3:37 PM
Active
Omega SPEEDMASTER SNOOPY EYES ON THE STARS LIMITED EDITION BOXES PAPERS

Omega SPEEDMASTER SNOOPY EYES ON THE STARS LIMITED EDITION BOXES PAPERS

Omega - 3578.51 · $12,825
42mm Omega Speedmaster Professional Moonwatch Snoopy 'Eyes on the Stars' in Stainless Steel, with black dial and Hesalite glass.

  • Condition: Excellent Condition
  • Movement: 1861 Manual-Winding Movement
  • Bracelet size: fits up to 7.5 inches wrist
  • Box papers: includes Omega wooden box, manual/cards dated 01.2004
Posted at
Mar 25, 2025, 9:10 PM
Active
Omega Speedmaster 321 Ed White Full Box & Papers

Omega Speedmaster 321 Ed White Full Box & Papers

Omega - 311.30.40.30.01.001 · $14,950
A Stealth Omega Speedmaster 321 Ed White with complete set, including inner & outer box, cards, loupe, strap changing tool, springbars, nato bands, booklets, and more. Sparing use over the last year has resulted in minor cosmetic issues.

  • Condition: Very clean and great condition with minor hairlines and a small nick on the bezel
  • Year: 2021
  • Condition of clasp/bracelet: hairlines
Posted at
Mar 25, 2025, 6:25 PM
Active
Omega Speedmaster Aventurine

Omega Speedmaster Aventurine

The Omega Speedmaster Aventurine Blue Side of the Moon is a beautiful watch that appears to be well-maintained, coming complete with double box and booklets.

  • Condition: Great shape with limited to no signs of wear on the case
Posted at
Mar 25, 2025, 3:53 PM
Active
Omega Snoopy Speedmaster 310.32.42.50.02.001

Omega Snoopy Speedmaster 310.32.42.50.02.001

Omega - 310.32.42.50.02.001 · $15,250
This Omega Silver Snoopy Speedmaster is a brand-new Ref 310.32.42.50.02.001, complete with accessories.

  • Condition: Brand new
  • Box: double box
  • Accessories: includes loupe, special booklet, regular booklet, serial tag, 3 cards with warranty stamped and dated 2/26/2025
Posted at
Mar 25, 2025, 3:47 PM
Active
Omega Speedmaster Moonwatch Moonshine!

Omega Speedmaster Moonwatch Moonshine!

Omega - 310.60.42.50.10.001 · $25,000
Omega Speedmaster Moonwatch Professional in Moonshine Gold, 42mm case size.

  • Condition: Great condition with very light wear
  • Case Size: 42 mm
  • Box Contents: Big box, special booklet, regular booklet, full links, warranty card
Posted at
Mar 25, 2025, 3:36 PM
Active
Omega Speedmaster Moon Chrono 311.30.42.30.01.005, 42 mm, Hesalite, Complete 2021

Omega Speedmaster Moon Chrono 311.30.42.30.01.005, 42 mm, Hesalite, Complete 2021

This Omega Speedmaster Moon Chrono is a manual-winding chronograph movement with Rhodium-plated finish, featuring a black dial and 48 hours power reserve. It has a stainless steel case and bracelet with deployment buckle.

  • Condition: Near mint condition
  • Case diameter: 42 mm
  • Between lugs: 20 mm
  • Thickness: 13.8 mm
Posted at
Mar 25, 2025, 2:26 AM
Active