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] 2025 OMEGA Speedmaster Moonwatch Pro White 310.30.42.50.04.001 Full Set Price Reduced

2025 OMEGA Speedmaster Moonwatch Pro White 310.30.42.50.04.001 Full Set Price Reduced

This classic Omega Speedmaster Moonwatch Pro features a white dial and comes with a full set, including boxes, cards, manuals, cleaning cloth, extra links, hang tag, and original receipt.

  • Condition: Very good condition with minor scratch on the case
  • Msrp: $9,100
  • Year: 2025
  • Diameter: 40.5mm
Posted at
Feb 10, 2026, 1:20 PM
Active
[WTS] Omega Speedmaster Pro Sapphire

Omega Speedmaster Pro Sapphire

A classic Omega Speedmaster Pro Sapphire in a 42mm Black model.

  • Condition: Great shape with light surface marks on bracelet
  • Case size: 42mm diameter
  • Thickness: 13.18 mm
  • Movement: Omega 3861
Posted at
Feb 10, 2026, 12:52 PM
Active
[WTS] Omega Speedmaster Reduced two-tone

Omega Speedmaster Reduced two-tone

This Omega Speedmaster Reduced is a 39mm two-tone watch with 18k gold details. It runs within +7 seconds per day and has a perfectly working chronograph.

Posted at
Feb 10, 2026, 5:01 AM
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[WTS] Omega Speedmaster Professional Moonwatch Full Set

Omega Speedmaster Professional Moonwatch Full Set

Omega - 310.30.42.50.01.001 · $10,900
A timeless and iconic Omega Speedmaster Professional Moonwatch in its traditional hesalite configuration.

  • Condition: Very good overall condition with very light cosmetic marks on the hesalite crystal.
  • Case size: 42mm
  • Crystal type: Hesalite
Posted at
Feb 10, 2026, 1:22 AM
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[WTS] Omega Speedmaster Legend Schumacher ref 3506.61 *PRICE DROP*

Omega Speedmaster Legend Schumacher ref 3506.61 *PRICE DROP*

Omega - 3506.61.00 · $3,900
This is a clean example of the Omega Speedmaster Legend Schumacher reference 3506.61.00 with a striking red dial and special collection engraved case back honoring Michael Schumacher.

  • Condition: full kit, minimal wear on bracelet
  • Case diameter: 42mm
  • Bracelet condition: minimal wear
  • Shipping included: CONUS shipping fully insured
Posted at
Feb 9, 2026, 6:53 PM
Active
[WTS] Omega Speedmaster Day-Date Chronometer ref 3222.80 *PRICE DROP*

Omega Speedmaster Day-Date Chronometer ref 3222.80 *PRICE DROP*

Omega - 3222.80 · $3,200
This Omega Speedmaster Day-Date Chronometer ref 3222.80 features a vibrant blue dial, 40mm case, and stainless steel bracelet with full original links.

  • Condition: Excellent, minor wear on bracelet
  • Case size: 40mm diameter
  • Bracelet condition: minor wear, tiny spot of discoloration on one side
  • Shipping included: fully insured CONUS shipping
Posted at
Feb 9, 2026, 6:40 PM
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[WTS] Omega Speedmaster Racing - 329.30.44.51.01.001 - Box and Papers!

Omega Speedmaster Racing - 329.30.44.51.01.001 - Box and Papers!

This Omega Speedmaster Racing Chronograph is a pre-owned watch in good condition, featuring a 44.25mm case and a stainless steel bracelet.

  • Condition: Pre-owned with minor wear
  • Case size: 44.25mm diameter
  • Bracelet material: Stainless steel
Posted at
Feb 9, 2026, 5:49 PM
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[WTS] 2025 Omega Speedmaster Racing 44mm - 329.32.44.51.01.001 - Price Reduced!

2025 Omega Speedmaster Racing 44mm - 329.32.44.51.01.001 - Price Reduced!

This Omega Speedmaster Racing features a bold design with orange racing accents and the Caliber 9900 Master Chronometer movement. It comes with a factory black micro-perforated leather strap and an original Omega wooden presentation box.

  • Condition: Fantastic preowned condition, barely worn
  • Movement: Omega Caliber 9900, Co-Axial, anti-magnetic, column-wheel chronograph
  • Power reserve: approximately 60 hours
  • Strap: factory black micro-perforated leather racing strap with orange rubber lining
Posted at
Feb 9, 2026, 5:47 PM
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[WTS] 2023 Omega Speedmaster Moonphase Sedna Gold

2023 Omega Speedmaster Moonphase Sedna Gold

2023 Omega Speedmaster Moonphase Sedna Gold, a high-end watch featuring a brown sun-brushed dial and precision moonphase display at 6 o'clock.

  • Condition: Excellent, with light signs of wear
  • Case Size: 44.25mm diameter
  • Case Material: 18k Sedna Gold
  • Dial Color: Brown
Posted at
Feb 9, 2026, 5:25 PM
Active