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 ’57 Black Dial (2024) - excellent condition - $5750

Omega Speedmaster ’57 Black Dial (2024) - excellent condition - $5750

A modern interpretation of the original 1957 Speedmaster with a black dial, Broad Arrow hands, and a slimmer case. The watch features a manual wind Co-Axial Master Chronometer movement and has a water resistance of 50m.

  • Condition: excellent
  • Case Size: 40.5mm diameter
  • Thickness: ~12.99 mm
  • Movement Type: manual wind, Co-Axial Master Chronometer
Posted at
Mar 7, 2026, 6:00 PM
Active
[WTS] Omega Speedmaster Moonphase Chrono 18k Sedna Gold & Steel 304.23.44.52.13001 B&P

Omega Speedmaster Moonphase Chrono 18k Sedna Gold & Steel 304.23.44.52.13001 B&P

Omega - 304.23.44.52.13001 · $10,195
This Omega Speedmaster Moonphase Chrono features a brown sun-brushed dial with diamond polished indexes and hands, accurate moonphase indication, and Ceragold tachymeter scale.

  • Movement: Meta certified Co-Axial Master Chronometer 9904
  • Case material: Stainless steel-18K Sedna gold
  • Diameter: 44.25 mm
Posted at
Mar 7, 2026, 4:19 PM
Active
[WTS] Omega Speedmaster Professional Moonwatch Full Steel Yellow Patina Original Step Tritium Dial (Unpolished)

Omega Speedmaster Professional Moonwatch Full Steel Yellow Patina Original Step Tritium Dial (Unpolished)

Omega - 145.022-69 · $5,235
This Omega Speedmaster Professional Moonwatch is a strong example of the highly regarded reference 145.022-69, featuring a razor-sharp case and crisp edges with excellent overall definition.

  • Condition: Unpolished, original condition
  • Size: 42mm
  • Year: 1969
  • Bezel condition: Signs of age and light fading
Posted at
Mar 7, 2026, 2:44 PM
Active
[WTS] Omega Speedmaster Grey Side Of The Moon - GSOTM - Grey Dial - 44mm - 311.93.44.51.99.001

Omega Speedmaster Grey Side Of The Moon - GSOTM - Grey Dial - 44mm - 311.93.44.51.99.001

Omega Speedmaster Grey Side Of The Moon with a grey dial and 44mm case size.

  • Condition: great, with small chip on edge of case back
  • Case Size: 44mm diameter
Posted at
Mar 7, 2026, 1:53 PM
Active
[WTS] Omega Speedmaster Reduced 3510.50 Excellent Condition + Serialized Hand Tag

Omega Speedmaster Reduced 3510.50 Excellent Condition + Serialized Hand Tag

Omega - 3510.50 · $2,750
For sale is an Omega Speedmaster Reduced in excellent condition with hardly any signs of wear, it runs great and functions properly.

  • Condition: Excellent Condition
  • Payment Methods Accepted: multiple (including crypto) with small fee
  • Meeting Options: local meetup or shipped
Posted at
Mar 7, 2026, 1:39 PM
Active
[WTS] Omega Speedmaster Racing 329.30.44.51.04.001 COMPLETE SET 2024

Omega Speedmaster Racing 329.30.44.51.04.001 COMPLETE SET 2024

This Omega Speedmaster Racing features a white dial and comes with the complete set, including double boxed packaging and documentation.

  • Condition: Excellent
  • Box and papers included: complete set
  • Warranty card date: 2024
  • Payment methods accepted: crypto, other payment methods
Posted at
Mar 7, 2026, 1:30 PM
Active
[WTS] Omega Speedmaster Professional Moonwatch Hesalite cal. 3861

Omega Speedmaster Professional Moonwatch Hesalite cal. 3861

This Omega Speedmaster Professional Moonwatch features a hesalite crystal, closed steel caseback, and comfortable quick adjust clasp bracelet. It has the most up-to-date 3861 caliber and retains the original design language and proportions.

  • Condition: clean piece with minimal wear and no condition notes
  • Bracelet size limit: 7in
  • Dimensions: 42mm X 20 lug width X 47h (lug to lug)
  • Crystal type: hesalite crystal with 13.8cc
Posted at
Mar 7, 2026, 12:48 PM
Active
[WTS] Omega "Silver Snoopy" Speedmaster 2025

Omega "Silver Snoopy" Speedmaster 2025

Omega - 310.32.42.50.02.001 · $15,299
This Omega Speedmaster Silver Snoopy Award is a commemorative edition that pays tribute to Omega's crucial role in the safe return of Apollo 13, featuring a highly detailed caseback animation of Snoopy and a mission-inspired design language.

  • Condition: Brand new, unworn
  • Case size: 42mm diameter
  • Water resistance: 50m depth rating
Posted at
Mar 7, 2026, 12:44 PM
Active
[WTS] OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 🔥$10,000🔥

OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 🔥$10,000🔥

OMEGA - 311.92.44.30.01.001 · $10,000
The OMEGA Speedmaster 'Dark Side of the Moon' Apollo 8 commemorates the 50th anniversary of the Apollo 8 mission, featuring a black ceramic case and a skeletonized dial with laser-ablated lunar surface details.

  • Condition: UNWORN
  • Case material: black ceramic
  • Case diameter: 44.25mm
  • Movement: Calibre 1869
Posted at
Mar 6, 2026, 8:25 PM
Active