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] 2025 Omega Speedmaster Racing 329.32.44.51.06.001 44MM Full Set

2025 Omega Speedmaster Racing 329.32.44.51.06.001 44MM Full Set

This is a 2025 Omega Speedmaster Racing Chronograph with a silver/grey dial and a 44mm case size. It comes as a full set with box, papers, and warranty coverage through January 2030.

  • Condition: Excellent
  • Case Size: 44mm diameter
  • Box And Papers: true
Posted at
Apr 24, 2026, 10:26 AM
Active
[WTS] 2025 Omega Speedmaster Professional Sapphire

2025 Omega Speedmaster Professional Sapphire

This Omega Speedmaster Professional Sapphire is being sold with a full kit and has been pressure tested at the Omega AD in April. It comes with a luna replica NASA velcro strap for reference.

  • Purchase History: purchased from this subreddit
  • Inclusions: full kit, luna replica NASA velcro strap
  • Wrist Size Reference: 6.5"
Posted at
Apr 24, 2026, 9:48 AM
Active
[WTS] Omega Speedmaster Reduced 3510.50 Bracelet Set - 22 Links, Full size, 94/100 Condition, OEM 1469/811

Omega Speedmaster Reduced 3510.50 Bracelet Set - 22 Links, Full size, 94/100 Condition, OEM 1469/811

Omega - 3510.50 · $599
This is an original Omega Speedmaster Reduced bracelet set in excellent condition, featuring a stainless steel finish and a folding clasp with tight action.

  • Condition: 94/100 - excellent vintage condition
  • Bracelet reference: 1469
  • Endlinks reference: 811 (pair included)
  • Total links: 22 (full complete set)
Posted at
Apr 24, 2026, 9:10 AM
Active
[WTS][US] Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm - 311.30.40.30.01.001 - Full Set

[US] Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm - 311.30.40.30.01.001 - Full Set

Omega - 311.30.40.30.01.001 · $15,650
A Omega Speedmaster Calibre 321 in black dial, with a 39.7mm case size and reference number 311.30.40.30.01.001.

  • Condition: pristine with minor hairlines on clasp, case, and bracelet
  • Diameter: 39.7mm
Posted at
Apr 24, 2026, 8:35 AM
Active
[WTS][US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set

[US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set

Up for sale is an Omega Speedmaster Moonwatch Professional - White Dial, in fantastic condition and functions perfectly.

  • Condition: pristine with minor hairlines on clasp, case, and bracelet
  • Case size: 42mm diameter
Posted at
Apr 24, 2026, 8:29 AM
Active
[WTS] Omega Speedmaster 50th Anniversary – No. 927/1957 – Limited Edition – Full Set

Omega Speedmaster 50th Anniversary – No. 927/1957 – Limited Edition – Full Set

A numbered Omega Speedmaster 50th Anniversary Limited Edition, No. 927 of 1,957 pieces, a highly collectible tribute to the original 1957 Speedmaster.

  • Condition: Very good overall condition with honest wear
  • Case size: 42mm diameter
  • Dial material: black enamel
  • Movement type: Omega manual-wind chronograph
Posted at
Apr 23, 2026, 11:59 PM
Active
[WTS] Omega Speedmaster Date ref. 3211.30.00 40mm | Great Condition (with Box & Serviced) | $2300

Omega Speedmaster Date ref. 3211.30.00 40mm | Great Condition (with Box & Serviced) | $2300

Omega - 3211.30.00 · $2,300
The Omega Speedmaster Date ref. 3211.30.00 is a modern Speedmaster that delivers a lot of watch for the money, with a clean all-silver dial configuration and polished hands creating a refined and versatile look.

  • Condition: great condition
  • Case size: 40mm diameter
  • Lug to lug length: 50mm
  • Thickness: 15mm
Posted at
Apr 23, 2026, 9:27 PM
Active
[WTS] Omega Speedmaster Racing 326.30.40.50.01.001 – Full Set

Omega Speedmaster Racing 326.30.40.50.01.001 – Full Set

Omega Speedmaster Racing, one of the seller's favorite watches, barely worn and in excellent condition.

  • Condition: ~95% - minor scratches on clasp
  • Scratch Location: clasp
Posted at
Apr 23, 2026, 8:41 PM
Active
[WTS] Omega Speedmaster Professional Moonwatch – Ref. 310.30.42.50.01.001 – Excellent Condition – 2022

Omega Speedmaster Professional Moonwatch – Ref. 310.30.42.50.01.001 – Excellent Condition – 2022

This Omega Speedmaster Professional Moonwatch features the iconic Hesalite crystal and manual-wind Master Chronometer movement 3861, staying true to its heritage while adding updated movement technology and finishing.

  • Condition: Excellent, minimal hairline scratches.
  • Case Size: 42mm
  • Movement: Manual-wind Co-Axial Master Chronometer (Cal. 3861)
  • Crystal: Hesalite
Posted at
Apr 23, 2026, 6:43 PM
Active