Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Kanjar Oman

Reference 310.30.42.50.01.003

Omega Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Kanjar Oman

About this watch

The Omega Speedmaster Professional Moonwatch 3861 is a piece of history wrapped around your wrist, with its rich lineage and modern upgrades capturing the hearts of watch enthusiasts and collectors alike. This manual-winding chronograph movement features a co-axial escapement and silicon balance spring, making it resistant to magnetic fields up to 15,000 gauss. The plexi glass provides a warm, vintage feel that many collectors adore, while the stainless steel case measures 42mm in diameter and has a water resistance of 50 meters. This timepiece is perfect for everyday wear, suitable for both formal and casual occasions. With its stunning design, robust movement, and versatility, it's a celebration of heritage, precision, and style.
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Key Features

  • Omega Caliber 3861 Movement
  • Plexi Glass with Vintage Feel
  • 42mm Stainless Steel Case
  • 50m Water Resistance
  • Manual-Winding Chronograph Function
  • Co-Axial Escapement and Silicon Balance Spring

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Kanjar Oman
Reference
310.30.42.50.01.003
Movement
3861
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph
  • Chronometer
Case
Stainless Steel 42mm
Dial Color
Black
Crystal
Plexi
Water Resistance
50

Current Listings

[WTS] Omega Speedmaster Professional Moonwatch 310.30.42.50.01.002 – Full Kit – Excellent Condition – $5,900

Omega Speedmaster Professional Moonwatch 310.30.42.50.01.002 – Full Kit – Excellent Condition – $5,900

Omega - 310.30.42.50.01.002 · $5,900
This Omega Speedmaster Professional Moonwatch is a highly sought-after model, known for its robust design and iconic status.

  • Condition: Excellent Condition
  • Movement: Automatic movement
Posted at
Oct 18, 2025, 10:53 AM
Active
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[wts] Omega Speedmaster racing 9900 44.25mm 329.33.44.51.01.001 under warranty

Omega Speedmaster racing 9900 44.25mm 329.33.44.51.01.001 under warranty

Omega - 329.33.44.51.01.001 · $5,800
This is a Omega Speedmaster racing watch, model 9900, featuring a 44.25mm case size and a factory warranty until OCT 2024.

  • Condition: Good condition
  • Case size: 44.25mm
  • Warranty: Factory warranty until OCT 2024
Posted at
Oct 17, 2025, 9:19 PM
Active
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[WTS] Pristine Omega Speedmaster Sapphire Sandwich - Full Set!

Pristine Omega Speedmaster Sapphire Sandwich - Full Set!

Omega - 310.30.42.50.01.002 · $6,499
A timeless and instantly recognizable watch, meticulously cared for by the seller over two years.

  • Condition: Pristine
  • Worn: 10-12 times over two years
  • Crystal condition: Perfect
  • Bezel condition: Perfect
Posted at
Oct 17, 2025, 8:27 PM
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[WTS] Omega Speedmaster 3590.50

Omega Speedmaster 3590.50

Omega - 3590.50
  • Title: [WTS] Omega Speedmaster 3590.50
Posted at
Oct 17, 2025, 5:28 PM
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[WTS] Omega 1861 Speedmaster Bracelet and Forstner Flatlink Contemporary

Omega 1861 Speedmaster Bracelet and Forstner Flatlink Contemporary

Omega - 1861 Speedmaster Bracelet and Forstner Flatlink Contemporary · $480
A Omega 1861 Speedmaster, sold with a Forstner bracelet and an additional Forstner Flatlink Contemporary. The first has some wear on the clasp and links, while the second is in excellent condition.

  • Condition: Forstner bracelet (worn) - Speedmaster bracelet (excellent)
  • Shipping Cost Uk: 10
  • Shipping Cost International: 25
Posted at
Oct 17, 2025, 4:05 PM
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[WTS] New & Unworn 2025 Omega Speedmaster Professional Moonwatch ‘Silver Snoopy Award’ 50th 310.32.42.50.02.001 Complete

New & Unworn 2025 Omega Speedmaster Professional Moonwatch ‘Silver Snoopy Award’ 50th 310.32.42.50.02.001 Complete

Omega - 310.32.42.50.02.001 · $15,950
The Omega Speedmaster Professional Moonwatch 'Silver Snoopy Award' is a limited edition watch celebrating the 50th anniversary of Omega's recognition from NASA astronauts for its role in the Apollo 13 mission. It features an animated caseback with a mesmerizing display of Snoopy piloting his Command and Service Module in lunar orbit.

  • Condition: Brand New
  • Year: 2025
  • Contents: Complete Collector Set with all the goodies
Posted at
Oct 17, 2025, 12:00 PM
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[WTS] 2024 Omega Speedmaster Professional Moonwatch Sapphire 310.30.42.50.01.002 Full Set

2024 Omega Speedmaster Professional Moonwatch Sapphire 310.30.42.50.01.002 Full Set

Omega - 310.30.42.50.01.002 · $6,450
2024 Omega Speedmaster Professional Moonwatch with stainless steel case, black bezel, and black dial.

  • Condition: Very nice preowned condition
  • Case material: stainless steel
  • Case dimensions: 42mm diameter
  • Bezel material: stainless steel
Posted at
Oct 16, 2025, 10:02 PM
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[WTS] Omega Speedmaster “Triple Date” 3521.30.00 – Fully Overhauled by Omega Service Center (Jan 2025) – $2,200 OBO Shipped (CONUS)

Omega Speedmaster “Triple Date” 3521.30.00 – Fully Overhauled by Omega Service Center (Jan 2025) – $2,200 OBO Shipped (CONUS)

Omega - 3521.30.00 · $2,200
  • Condition: Excellent post-service condition - running perfectly
  • Case diameter: 39mm
  • Lug width: 18mm
  • Crystal material: Sapphire
Posted at
Oct 16, 2025, 6:54 PM
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[WTS] Omega Speedmaster BRAND NEW $4,749

Omega Speedmaster BRAND NEW $4,749

Omega - Speedmaster · $4,749
Brand new Omega Speedmaster for sale.

  • Condition: brand new
Posted at
Oct 16, 2025, 3:32 PM
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