Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel - Moonshine Gold / Silver

Reference 310.20.42.50.02.001

About this watch

The Omega Speedmaster Professional Moonwatch 310.20.42.50.02.001 is a stunning blend of classic design and cutting-edge technology, featuring a stainless steel case, Moonshine gold accents, and sophisticated chronograph functionality. At the heart of this timepiece is the Omega caliber 3861 movement, certified as a Master Chronometer by METAS and boasting advanced features like a co-axial escapement, silicon balance spring, and magnetic resistance of up to 15,000 gauss. The Speedmaster's ergonomic design ensures it sits comfortably on the wrist, while its 50-meter water resistance makes it practical for daily wear. This watch is incredibly versatile, adapting effortlessly from formal events to casual days out, and its durability is ensured by top-notch materials like ceramic, stainless steel, and Moonshine gold. With a price point that reflects its quality and heritage, the Omega Speedmaster Professional Moonwatch 3861 is an investment in horological history.
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Key Features

  • Omega caliber 3861 movement with co-axial escapement and silicon balance spring
  • 50-meter water resistance for everyday wear
  • Chronograph functionality with precise timing and intuitive layout
  • Moonshine gold accents and stainless steel case for luxurious appearance
  • Sapphire glass for scratch-resistance and durability
  • Master Chronometer certification by METAS for high accuracy and reliability

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Stainless Steel - Moonshine Gold / Silver
Reference
310.20.42.50.02.001
Movement
3861
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph
  • Chronometer
Case
42mm
Dial Color
Silver
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] Omega Speedmaster ’57 40.5mm Red Co-Axial Chronograph BOXES/PAPERS!

Omega Speedmaster ’57 40.5mm Red Co-Axial Chronograph BOXES/PAPERS!

A red dial Omega Speedmaster '57 chronograph, 40.5mm in size, powered by a manual movement.

  • Condition: pre-owned, nice condition with typical cosmetic wear throughout
  • Case Diameter: 40.5mm
  • Movement: manual
  • Water Proofness: 50 meters depth rating
Posted at
Feb 5, 2026, 3:20 PM
Active
OMEGA speedmaster marui limited model 3510.21.00 automatic [WTS]

OMEGA speedmaster marui limited model 3510.21.00 automatic

The watch being listed is an Omega Speedmaster Marui Limited Model 3510.21.00 automatic.

Posted at
Feb 5, 2026, 2:38 PM
Active
[WTS] Omega Speedmaster Reference 311.30.42.30.01.005

Omega Speedmaster Reference 311.30.42.30.01.005

This Omega Speedmaster professional is a beautiful watch from 2019, complete with everything and in perfect condition.

  • Condition: perfect
  • Movement: manual winding
  • Size: 42mm diameter
  • Year: 2019
Posted at
Feb 5, 2026, 1:37 PM
Active
[WTS] Omega Speedmaster 3520.53 Box, Manual, Card - $2,850 - Reserved post for u/subengineer

Omega Speedmaster 3520.53 Box, Manual, Card - $2,850 - Reserved post for u/subengineer

Omega - 3520.53 · $2,850
A Omega Speedmaster 3520.53 Full Kit is being sold in good condition with an automatic movement and a steel case.

  • Condition: Good condition with some usage marks and minimal oxidation
  • Case Size: 39mm diameter
  • Water Resistance: Not specified
  • Movement Type: Automatic
Posted at
Feb 5, 2026, 4:18 AM
Active
[WTS] Omega Speedmaster Professional Moonwatch Steel Step Dial Yellow Patina 1969 (Serviced)

Omega Speedmaster Professional Moonwatch Steel Step Dial Yellow Patina 1969 (Serviced)

Omega - 145.022-69 · $4,995
This Omega Speedmaster Moonwatch ref. 145.022-69 is presented in all-original configuration and features a step dial with pronounced patina across all indices.

  • Condition: Very nice overall condition, with honest wear consistent with age
  • Size: 42mm diameter
  • Year: 1969
  • Movement Status: Professionally serviced in January 2026
Posted at
Feb 4, 2026, 10:26 PM
Active
[wts] 2024 OMEGA SPEEDMASTER WHITE DIAL
310.30.42.50.04.001 $7399

2024 OMEGA SPEEDMASTER WHITE DIAL 310.30.42.50.04.001 $7399

This is a 2024 OMEGA SPEEDMASTER with a white dial and various features such as a stainless steel case, sapphire crystal, and a 50-hour power reserve.

  • Condition: Pre Owned, Cosmetic Condition: 9/10
  • Case Material: STAINLESS/SAPPHIRE
  • Water Resistance: 50 METERS/165 FEET
Posted at
Feb 4, 2026, 9:40 PM
Active
[WTS] Omega Speedmaster Reduced 39mm Serviced ⏱

Omega Speedmaster Reduced 39mm Serviced ⏱

This is a neo-vintage Omega Speedmaster Reduced, coming with an original Omega modern box set and manual. The watch features a 39mm case and has been accurately timekeeping after service.

  • Case Size: 39mm
  • Lug To Lug: 45mm
  • Lug Width: 18mm
Posted at
Feb 4, 2026, 9:18 PM
Active
[WTS] 2023 Omega Speedmaster Moonwatch 42mm Moonshine Gold Green 310.60.42.50.10.001 Full Set

2023 Omega Speedmaster Moonwatch 42mm Moonshine Gold Green 310.60.42.50.10.001 Full Set

Omega - 310.60.42.50.10.001 · $29,200
2023 Omega Speedmaster Moonwatch 42mm Moonshine Gold Green, a manual wind mechanical watch in very good condition.

  • Condition: Very nice preowned condition with some light scratches on the case and bracelet
  • Case Dimensions: 42mm diameter
  • Movement: Manual Wind, Mechanical
  • Original Purchase Date: September 2023
Posted at
Feb 4, 2026, 8:13 PM
Active
[WTS] Omega Speedmaster Pilot 332.10.41.51.01.002

Omega Speedmaster Pilot 332.10.41.51.01.002

This Omega Speedmaster Pilot is a brand new, still stickered model from 2025.

  • Condition: new, unworn, unsized
  • Year of production: 2025
Posted at
Feb 4, 2026, 7:41 PM
Active