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

Reference 310.20.42.50.99.001

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

About this watch

The Omega Speedmaster Professional Moonwatch 310.20.42.50.99.001 is a stunning blend of tradition and innovation, featuring a unique Sedna Gold and pink finish. Its 42mm stainless steel case and Sedna Gold accents command attention, while the remarkable Omega caliber 3861 movement boasts a co-axial escapement, reducing friction for enhanced accuracy and longevity. Certified by METAS as a Master Chronometer, this watch can resist magnetic fields reaching an impressive 15,000 gauss. The sunburst pink finish adds sophistication, making it perfect for both casual and formal settings.
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Key Features

  • Omega caliber 3861 movement
  • 42mm stainless steel case
  • Sedna Gold accents
  • Co-axial escapement
  • Master Chronometer certified by METAS
  • 50m water resistance
  • Chronograph function

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink
Reference
310.20.42.50.99.001
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 Sapphire Sandwich 310.30.42.50.01.002 Like New Unworn condition Full set 6500$ ♟️

Omega Speedmaster Sapphire Sandwich 310.30.42.50.01.002 Like New Unworn condition Full set 6500$ ♟️

Omega - Speedmaster Sapphire Sandwich 310.30.42.50.01.002 · $6,500
A Omega Speedmaster Sapphire Sandwich in excellent condition, with a rich history as the legendary moonwatch.

  • Condition: Like New Unworn
  • Shipping: available via Wire/paypal/Wise
  • Location: Miami Florida
Posted at
Apr 21, 2026, 5:10 PM
Active
View listing on r/WatchExchange
[WTS][US] Omega Speedmaster First Omega in Space - FOiS - 310.30.40.50.06.001 - Full Set

[US] Omega Speedmaster First Omega in Space - FOiS - 310.30.40.50.06.001 - Full Set

Omega - 310.30.40.50.06.001 · $7,550
This Omega Speedmaster First Omega in Space is a fully functional watch that comes with a full set of accessories.

  • Condition: Fantastic condition with few hairlines on case, clasp, and bracelet
  • Case size: 40mm diameter
Posted at
Apr 21, 2026, 2:45 PM
Active
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[WTS] Omega Speedmaster Grey Side of The Moon 311.93.44.51.99.002 Mint 2025

Omega Speedmaster Grey Side of The Moon 311.93.44.51.99.002 Mint 2025

Omega - 311.93.44.51.99.002 · $7,995
This Omega Speedmaster Grey Side of The Moon is for sale in a very mint condition with no flaws and comes as a fully complete set.

  • Condition: Mint condition
  • Warranty Card Date: April 2025
  • Shipping Method: WW insured shipping
Posted at
Apr 21, 2026, 12:44 PM
Active
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[WTS] Omega Speedmaster '57 - current gen - warranty till Apr 2027 (price reduced)

Omega Speedmaster '57 - current gen - warranty till Apr 2027 (price reduced)

Omega - 332.10.41.51.01.001 · $5,799
Up for sale is my April 29, 2022 dated Omega Speedmaster '57, current generation, with warranty till Apr 2027.

  • Condition: Pre-owned, very good condition with minor scratches and marks
  • Dimensions: 40mm diameter
  • Bracelet length: 17cm
Posted at
Apr 21, 2026, 9:31 AM
Active
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[WTS] Omega Speedmaster Professional Moonwatch ST 145.022-69 (1972)

Omega Speedmaster Professional Moonwatch ST 145.022-69 (1972)

Omega - ST 145.022-69 · $5,000
A 1972 Omega Speedmaster Professional Moonwatch with a manual wind Cal. 861 movement, 42mm stainless steel case, and black dial with three registers.

  • Condition: some scratches on the bezel and crystal, some marks on the case
  • Movement: Cal. 861
  • Case size: 42mm diameter
  • Water resistance: 30m depth rating
Posted at
Apr 21, 2026, 12:22 AM
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[WTS]🐼NEW 2026 OMEGA SPEEDMASTER REVERSE PANDA

🐼NEW 2026 OMEGA SPEEDMASTER REVERSE PANDA

Omega - Speedmaster
No description provided.

  • Condition: new
  • Year: 2026
Posted at
Apr 20, 2026, 11:39 PM
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[WTS] Omega Speedmaster Pro “Moon to Mars” Edition

Omega Speedmaster Pro “Moon to Mars” Edition

Omega - 3577.50 · $6,500
The Omega Speedmaster Pro 'Moon to Mars' Edition features a beautiful dial with subdials painted as Earth, Moon and Mars.

  • Condition: Good, with a scratch on the crystal at 1 o'clock
  • Bracelet size: 7 inches
  • Movement: 1861 manual
  • Size: 42mm diameter
Posted at
Apr 20, 2026, 10:37 PM
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[WTS] Omega Speedmaster Moonwatch Professional 42mm 310.30.42.50.01.002 | 2025 Complete Set

Omega Speedmaster Moonwatch Professional 42mm 310.30.42.50.01.002 | 2025 Complete Set

Omega - 310.30.42.50.01.002 · $6,950
The Omega Speedmaster Moonwatch Professional is a 42mm watch with an unknown service history.

  • Condition: Great Pre-Owned
  • Links: 24 Links
  • Warranty Years Remaining: 1 year (2025)
Posted at
Apr 20, 2026, 9:59 PM
Active
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[WTS] Omega Speedmaster. Mother of pearl dial. 39mm. Automatic.

Omega Speedmaster. Mother of pearl dial. 39mm. Automatic.

Omega · $2,100
A 39mm automatic Omega Speedmaster with a mother of pearl dial and OEM omega strap.

  • Case size: 39mm
  • Movement type: Automatic
Posted at
Apr 20, 2026, 7:37 PM
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View listing on r/WatchExchange