Omega Speedmaster Speedmaster Professional Moonwatch 3861 Canopus Gold - Baguette / Silver - Diamond / Bracelet

Reference 310.55.42.50.52.004

About this watch

The Omega Speedmaster Professional Moonwatch 310.55.42.50.52.004 is a masterpiece of luxury watchmaking, marrying cutting-edge technology with exquisite craftsmanship. This modern iteration of the iconic 'Moonwatch' pays homage to its rich history while incorporating contemporary advancements. The Canopus Gold case features a sunburst finish and gem-set bezel, radiating elegance and opulence. The manual-winding chronograph movement boasts 50 hours of power reserve and resistance to magnetic fields up to 15,000 gauss. With its robust features, stunning design, and historical significance, this timepiece is a worthy investment for serious collectors and space enthusiasts. Its impeccable performance and timeless appeal make it a statement piece that will remain a favorite for years to come.
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Key Features

  • Manual-winding chronograph movement
  • Canopus Gold case with sunburst finish and gem-set bezel
  • Master Chronometer certification by METAS
  • Resistance to magnetic fields up to 15,000 gauss
  • 50 hours of power reserve
  • Co-Axial escapement and Silicon balance spring

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Canopus Gold - Baguette / Silver - Diamond / Bracelet
Reference
310.55.42.50.52.004
Movement
3861
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph
  • Chronometer
Case
White Gold 42mm
Dial Color
Silver
Crystal
Sapphire
Water Resistance
50

Current Listings

[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
[WTS] Omega Speedmaster Dark Side of The Moon 44.25mm 311.92.44.51.01.007 | 2021 Complete Set w/ 2 Straps

Omega Speedmaster Dark Side of The Moon 44.25mm 311.92.44.51.01.007 | 2021 Complete Set w/ 2 Straps

A 2021 Omega Speedmaster Dark Side of The Moon in 44.25mm size, featuring two OEM straps and a complete set with inner and outer boxes.

  • Condition: Great Pre-Owned Condition
  • Case Size: 44.25mm
  • Service History: Unknown
  • Serial Number: 340+ AMP
Posted at
Feb 4, 2026, 6:42 PM
Active
[WTS] Omega Speedmaster Reduced 3510.50

Omega Speedmaster Reduced 3510.50

Omega - 3510.50 · $2,550
For sale is an Omega Speedmaster Reduced 3510.50 in really great condition, with no major signs of wear, and running great.

  • Condition: really great condition
  • Payment Methods Accepted: pretty much every payment method including crypto
  • No Paypal: true
  • Trade Acceptable Brands: Tudor, Cartier, Rolex, Omega, Breitling, AP
Posted at
Feb 4, 2026, 3:43 PM
Active
[WTS] Omega Speedmaster 324.23.38.50.02.001 38mm Co-Axial

Omega Speedmaster 324.23.38.50.02.001 38mm Co-Axial

For sale is a super clean Omega Speedmaster with a unique gold and green bezel, sitting on a green leather strap.

  • Condition: Excellent
  • Case Size: 38mm diameter
  • Bezel Color: gold and green
Posted at
Feb 4, 2026, 3:36 PM
Active