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

Reference 310.20.42.50.02.001

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

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 Mint Omega Speedmaster 321 Calibre "Ed White" 311.30.40.30.01.001 - Full Set Both Omega Straps w/ Extra Forstner Bracelet

2025 Mint Omega Speedmaster 321 Calibre "Ed White" 311.30.40.30.01.001 - Full Set Both Omega Straps w/ Extra Forstner Bracelet

Omega - 311.30.40.30.01.001 · $15,500
This Omega Speedmaster Calibre 321 'Ed White' is a highly sought-after collector's piece, featuring the iconic 321 movement in pristine condition. It comes with its original box, papers, and accessories, including an extra Forstner bracelet.

  • Condition: Very Excellent pre-owned condition
  • Movement: Omega Caliber 321 (manual-wind chronograph)
  • Case material: Stainless steel
  • Case size: 39.7mm
Posted at
Feb 4, 2026, 2:58 PM
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[WTS] Selling my Omega Speedmaster Professional Moonwatch Hesalite 311.33.42.30 with big box asking $3999 CONUS + shipping

Selling my Omega Speedmaster Professional Moonwatch Hesalite 311.33.42.30 with big box asking $3999 CONUS + shipping

Omega - Speedmaster Professional Moonwatch Hesalite 311.33.42.30 · $3,999
Recently purchased Omega Speedmaster Professional Moonwatch Hesalite, in good condition, with a beautifully repaired leather strap. The watch runs well and keeps time accurately.

  • Condition: good condition, minor damage on leather strap
  • Leather strap condition: minor damage with visible repair
  • Strap included: no
Posted at
Feb 4, 2026, 12:26 PM
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[WTS] Omega Speedmaster ref. 310.30.42.50.1.001. Super nice condition, watch only. Fully linked and running perfectly. $4900 shipped conus.

Omega Speedmaster ref. 310.30.42.50.1.001. Super nice condition, watch only. Fully linked and running perfectly. $4900 shipped conus.

Omega - 310.30.42.50.1.001 · $4,900
A well-maintained Omega Speedmaster in excellent working order, fully linked.

  • Condition: super nice condition, watch only
Posted at
Feb 3, 2026, 10:29 PM
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[WTS] Omega Speedmaster Reduced Black Mother of Pearl - Full Serviced! - $2,999 Shipped!

Omega Speedmaster Reduced Black Mother of Pearl - Full Serviced! - $2,999 Shipped!

Omega - Speedmaster Reduced · $2,999
This Omega Speedmaster Reduced Black Mother of Pearl is a watch that features a unique mother-of-pearl dial. It has been fully serviced.

  • Serviced: true
Posted at
Feb 3, 2026, 8:13 PM
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[WTS] Omega Speedmaster 3520.50 Triple Calendar Mk40 Cosmos - Box & Paper - $1999 SHIPPED

Omega Speedmaster 3520.50 Triple Calendar Mk40 Cosmos - Box & Paper - $1999 SHIPPED

Omega - 3520.50 · $1,999
This Omega Speedmaster Triple Calendar Mk40 Cosmos features a 39mm case size, black dial, and bezel, powered by the Omega 1151 Caliber. It has a day, date, and month function.

  • Condition: Fair user condition
  • Case size: 39mm
  • Lug-to-lug: 44.75mm
  • Bracelet size: fits up to 6.75"
Posted at
Feb 3, 2026, 6:46 PM
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[WTS] Omega Speedmaster Professional Moonwatch Full Steel 145.022-69 Ghost Bezel Yellow Patina Step Dial 1969 (Serviced) 🔥

Omega Speedmaster Professional Moonwatch Full Steel 145.022-69 Ghost Bezel Yellow Patina Step Dial 1969 (Serviced) 🔥

Omega - 145.022-69 · $5,425
This Omega Speedmaster Moonwatch presents beautifully in full steel, showcasing a strong and sharp case with thick lugs that retain their original shape. The step dial displays a warm yellow patina across the hour markers and matching hands, creating a cohesive vintage appeal. The tritium lume remains reactive under UV light.

  • Condition: Serviced, lightly polished case
  • Size: 42mm diameter
  • Year: 1969
  • Movement: 861 caliber, professionally serviced
Posted at
Feb 3, 2026, 5:56 PM
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[WTS] Omega Speedmaster CK2998 Limited Edition “Blue Panda” - Full Set - 311.33.40.30.02.001

Omega Speedmaster CK2998 Limited Edition “Blue Panda” - Full Set - 311.33.40.30.02.001

Omega - 311.33.40.30.02.001 · $6,895
This listing is for an Omega Speedmaster CK2998 Limited Edition 'Blue Panda' in a full set with all original accessories.

  • Condition: Amazing, barely worn
  • Case size: 40mm diameter
  • Movement: Manual winding OMEGA calibre 1861
Posted at
Feb 3, 2026, 1:35 PM
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[WTS] OEM OMEGA Speedmaster 3861 Clasp (Not Quick Adjust - Original Clasp With Two Micro Adjust Positions) - Great Condition - $99 shipped CONUS

OEM OMEGA Speedmaster 3861 Clasp (Not Quick Adjust - Original Clasp With Two Micro Adjust Positions) - Great Condition - $99 shipped CONUS

OMEGA - Speedmaster 3861 · $99
The listing is for an OEM Omega Speedmaster with a specific clasp, which does not have the quick adjust feature but has two micro adjust positions.

  • Condition: Great Condition
  • Clasp type: Original Clasp
  • Micro adjust positions: Two
Posted at
Feb 3, 2026, 1:29 PM
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[WTS] Omega Speedmaster Day-Date Reduced ref 3222.80 *PRICE DROP*

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

Omega - 3222.80 · $3,250
This Omega Speedmaster Day-Date ref 3222.80 features a vibrant blue dial and stainless steel bracelet with day, date, month, chronograph, and 24-hour indicators.

  • Condition: Excellent, minor hairlines on the bracelet and a spot of discoloration in the first link
  • Dial size: 40mm
  • Water resistance: 50m
  • Bracelet length: full original links still attached
Posted at
Feb 3, 2026, 1:29 PM
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View listing on r/WatchExchange