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] 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 features a step dial and yellow patina, showcasing visible signs of use that add character.

  • Condition: Very nice overall condition, with honest wear consistent with age
  • Size: 42mm diameter
  • Year: 1969
  • Case condition: Visible signs of use that add character
Posted at
Jan 28, 2026, 9:24 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Reduced

Omega Speedmaster Reduced

Omega - 3510.50 · $2,500
Selling my Omega Speedy Reduced, a 39mm case size watch with a bracelet that fits about an 18cm wrist.

  • Case Size: 39mm diameter
  • Wrist Fit: fits about 18cm wrist
Posted at
Jan 28, 2026, 8:21 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Professional Moonwatch 3573.50

Omega Speedmaster Professional Moonwatch 3573.50

Omega - 3573.50 · $4,350
For sale is an Omega Speedmaster Professional Moonwatch reference 3573.50, this watch is in excellent condition with hardly any signs of wear.

  • Condition: Excellent
  • Payment Methods Accepted: crypto, other methods including a fee
  • Local Pickup Available: yes
  • Trade In Eligible Brands: Tudor, Cartier, Rolex, Omega, Breitling, AP
Posted at
Jan 28, 2026, 2:23 PM
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View listing on r/WatchExchange
[WTS] Omega Speedmaster Sapphire Sandwich 310.30.42.50.01.002

Omega Speedmaster Sapphire Sandwich 310.30.42.50.01.002

Omega - 310.30.42.50.01.002 · $5,500
A Omega Speedmaster Moonwatch Professional 'Sapphire Sandwich' in excellent condition, featuring a 3861 movement and a full set with bracelet.

  • Condition: Excellent, minor fit issues with bracelet
  • Bracelet Length: ~7.5"
  • Links Extra: 2
Posted at
Jan 28, 2026, 2:20 PM
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[WTS] Omega speedmaster Hesalite Full set $4,200

Omega speedmaster Hesalite Full set $4,200

Omega - Speedmaster · $4,200
This is a listing for an Omega Speedmaster with Hesalite crystal.

  • Key1: Hesalite
Posted at
Jan 28, 2026, 1:19 PM
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[WTS] Omega Speedmaster Sapphire Sandwich 310.30.42.50.01.002

Omega Speedmaster Sapphire Sandwich 310.30.42.50.01.002

Omega - 310.30.42.50.01.002 · $5,500
A Omega Speedmaster Moonwatch Professional with a 3861 movement and sapphire crystal caseback.

  • Condition: Excellent, minor fitment issue on the bracelet
  • Movement: Calibre 3861
  • Bracelet size: ~7.5" wrist, with 2 extra links for adjustment
Posted at
Jan 28, 2026, 11:17 AM
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[WTS] Omega Speedmaster FOIS 310.30.40.50.06.001 — Full Set — 2024 — Warranty to 2029

Omega Speedmaster FOIS 310.30.40.50.06.001 — Full Set — 2024 — Warranty to 2029

Omega - 310.30.40.50.06.001 · $6,850
This Omega Speedmaster FOIS is a modern reissue of the model worn by astronaut Wally Schirra during the Mercury-Atlas 8 mission. It features straight lugs, a symmetrical case, and the hand-wound Caliber 3861 with Master Chronometer certification.

  • Condition: great pre-owned condition, light normal wear
  • Caliber: hand-wound Caliber 3861
  • Warranty Expires: 2029
  • Case Size: 40mm diameter
Posted at
Jan 28, 2026, 11:03 AM
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[WTS] (Serviced) Omega Speedmaster Reduced Sapphire Crystal 3539.50 39mm $2,700

(Serviced) Omega Speedmaster Reduced Sapphire Crystal 3539.50 39mm $2,700

Omega - 3539.50 · $2,700
  • Case diameter: 39mm
Posted at
Jan 27, 2026, 10:13 PM
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[WTS] Omega Speedmaster Mark II. 327.10.43.50.01.001.

Omega Speedmaster Mark II. 327.10.43.50.01.001.

Omega - 327.10.43.50.01.001 · $3,895
This Omega Speedmaster Mark II is a high-end watch with a large wrist size. It's in very good condition and comes with additional photos available upon request.

  • Condition: Very good condition
  • Wrist size: large
Posted at
Jan 27, 2026, 9:02 PM
Active
View listing on r/WatchExchange