Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink / Alligator

Reference 310.23.42.50.99.001

About this watch

The Omega Speedmaster Professional Moonwatch 3861 is a masterpiece of horology that seamlessly blends heritage, luxury, and modern technology. Its stunning pink sunburst dial radiates warmth and elegance, while the Sedna gold accents harmonize beautifully with the stainless steel case. The chronograph function is easily accessible, making it practical for everyday use. At its heart beats the Omega Caliber 3861 movement, featuring a co-axial escapement and silicon balance spring. This timepiece is not just a watch; it's a statement of sophistication and style that pairs well with both formal and casual attire.
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Key Features

  • Omega Caliber 3861 movement
  • Sedna gold accents
  • Stainless steel case
  • Tachymeter bezel
  • Water resistance up to 50 meters
  • 42mm diameter
  • Co-axial escapement and silicon balance spring

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink / Alligator
Reference
310.23.42.50.99.001
Movement
3861
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph
  • Chronometer
Case
42mm
Dial Color
Pink
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] Omega Speedmaster Automatic 3510.50

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Omega - 3510.50 · $1,850
A discontinued Omega Speedmaster Reduced model from 1998, featuring an automatic self-winding movement and a black dial with luminous hands and markers.

  • Condition: good
  • Case Size: 39mm
  • Movement Type: automatic self-winding
Posted at
Feb 12, 2026, 4:34 PM
Active
[WTS] ‼️Omega Speedmaster “FOIS” 311.32.40.30.01.001 LIKE NEW CONDITION *$4500 shipped** ‼️

‼️Omega Speedmaster “FOIS” 311.32.40.30.01.001 LIKE NEW CONDITION *$4500 shipped** ‼️

The Omega Speedmaster 'First Omega in Space' is a manual-wind watch with a 39.7mm case, powered by the Caliber 1861 movement.

  • Condition: Excellent / like new
  • Case size: 39.7mm
  • Movement: Manual wind (Caliber 1861)
  • Box condition: Original box shows wear
Posted at
Feb 12, 2026, 4:33 PM
Active
[WTS][CAN/CONUS] Omega Speedmaster 1st gen. FOIS “Ed White In Space” mod

[CAN/CONUS] Omega Speedmaster 1st gen. FOIS “Ed White In Space” mod

Omega - FOIS · $4,555
A first generation Omega Speedmaster First Omega In Space with a Ed White modification, featuring a vintage logo dial, Alpha-hands, and other upgrades.

  • Condition: Very good condition, some wear from occasional usage but nothing of a concern
  • Dial: vintage logo from Omega Broad Arrow 3594.50q
  • Hands: Speedy baton hands
  • Bezel: Spiralwinder Ceramic bezel
Posted at
Feb 12, 2026, 2:36 PM
Active
[WTS] Omega Speedmaster Sapphire Sandwich Full Set, 09/2025 Warranty

Omega Speedmaster Sapphire Sandwich Full Set, 09/2025 Warranty

A Omega Speedmaster sapphire sandwich, recently acquired and only worn twice, with a full set of accessories.

  • Condition: Excellent condition
  • Warranty Date: 09/2025
  • Accessories: Full set with inner and outer box, papers, hang tag, and all spare links
Posted at
Feb 12, 2026, 10:05 AM
Active
[WTS] Omega Speedmaster First Omega in Space (FOIS) w/ Box & Papers

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Up for sale is my Omega Speedmaster First Omega in Space (FOIS) ref.310.30.40.50.06.001. I am the original owner, purchased new from my local Omega Boutique.

  • Condition: Very good condition, some light signs of wear
  • Box And Papers: Yes, including original box, warranty, pictogram, and chronometer cards
  • Shipping: Within Continental United States or internationally at additional cost
Posted at
Feb 11, 2026, 7:00 PM
Active
[WTS] Omega Speedmaster 3513.50 Date

Omega Speedmaster 3513.50 Date

Omega - 3513.50 · $2,000
This Omega Speedmaster Day-Date has been kept in great condition and still functions perfectly with its chronograph feature.

  • Condition: Pre-owned, lightly worn
  • Case material: Stainless steel
  • Movement: Omega Cal. 1152 (Automatic)
  • Power reserve: 44 hours
Posted at
Feb 11, 2026, 6:10 PM
Active
[WTS] Omega Speedmaster BSOTM | Aventurine Dial | 304.93.44.52.03.002 | Full Set

Omega Speedmaster BSOTM | Aventurine Dial | 304.93.44.52.03.002 | Full Set

Omega - 304.93.44.52.03.002 · $11,250
2022 Omega Speedmaster Blue Side of the Moon features an aventurine dial that shines in light, with a subtle yet captivating appearance.

  • Condition: Excellent
  • Diameter: 40mm
  • Depth rating: 30m
Posted at
Feb 11, 2026, 5:47 PM
Active
[WTS] Omega Speedmaster Racing Chronograph Silver Dial Watch 326.30.40.50.02.001 Complete Set

Omega Speedmaster Racing Chronograph Silver Dial Watch 326.30.40.50.02.001 Complete Set

The Omega Speedmaster Racing features a silver white dial with bold chronograph hands and counters, housed in a stainless steel case and bracelet.

  • Condition: Excellent
  • Case size: 40mm diameter
  • Movement: chronograph movement
Posted at
Feb 11, 2026, 2:45 PM
Active
[WTS] Omega Speedmaster Reduced Automatic With Peppered Dial Ref. 3510.50.00

Omega Speedmaster Reduced Automatic With Peppered Dial Ref. 3510.50.00

Omega - 3510.50.00 · $2,700
This Omega Speedmaster Reduced features a unique peppered dial that evokes the night sky and gives it a vintage vibe.

  • Condition: Used with minor wear on the bracelet
  • Diameter: 39.7mm
  • Water Resistance: not guaranteed due to age
Posted at
Feb 11, 2026, 2:05 PM
Active