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 Moonwatch White Dial (310.30.42.50.04.001)

Omega Speedmaster Moonwatch White Dial (310.30.42.50.04.001)

Omega - 310.30.42.50.04.001 · $6,950
This Omega Speedmaster Moonwatch features a white dial and is sold with its original boxes, papers, warranty card, pictogram card, and Master chronometer certificate.

  • Condition: Mint condition
  • Accessories included: boxes, papers, warranty card, pictogram card, Master chronometer certificate
Posted at
Apr 30, 2025, 10:55 PM
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[WTS] Omega Speedmaster Reduced Two Tone

Omega Speedmaster Reduced Two Tone

Omega - 3714.20.80 · $2,500
A rare two-tone Omega Speedmaster Reduced, in overall good condition for its age, with a white dial and 18k gold bezel.

  • Condition: good condition with some wear on the case and bezel
  • Movement: Cal 1140
  • Size: 39mm diameter
  • Case material: two tone
Posted at
Apr 30, 2025, 8:55 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Day Date 3521.30 1800$

Omega Speedmaster Day Date 3521.30 1800$

Omega - Speedmaster Day Date 3521.30 · $1,800
Posted at
Apr 30, 2025, 5:58 PM
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[WTS] 1997 Omega Speedmaster Professional Gemini V (Ref. 345.0022)

1997 Omega Speedmaster Professional Gemini V (Ref. 345.0022)

Omega - 345.0022 · $8,999
The Omega Speedmaster Professional Gemini V Watch commemorates the NASA Gemini V mission, featuring a unique 9 o'clock sub-dial with the mission patch and a limited release of 150 models.

  • Condition: Excellent/like new
  • Case size: 42mm diameter
  • Bracelet type: Omega 1499 with 842 end pieces
  • Box papers status: Original inner/outer boxes and booklets present
Posted at
Apr 30, 2025, 4:57 PM
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[WTS] OEM Omega Rubber strap for Speedmaster Racing 40mm coaxial 19mm - 98000417

OEM Omega Rubber strap for Speedmaster Racing 40mm coaxial 19mm - 98000417

Omega - Speedmaster Racing 40mm coaxial 19mm - 98000417 · $290
A new Omega Speedmaster Racing watch strap with 19mm lugs, suitable for a 40mm coaxial model.

  • Lug size: 19mm
  • Strap type: Rubber
Posted at
Apr 30, 2025, 10:49 AM
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[WTS] Omega Speedmaster Speedy Tuesday - MINT UNWORN $14,500

Omega Speedmaster Speedy Tuesday - MINT UNWORN $14,500

Omega - Speedmaster Speedy Tuesday ST1 · $14,500
Up for sale is THE Speedy Tuesday ST1, an UNWORN and MINT example of this hard-to-find watch. It includes the watch, box, warranty cards, and accessories.

  • Condition: Mint unworn
  • Case Size: 42mm diameter
Posted at
Apr 30, 2025, 9:58 AM
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[WTS] Omega Speedmaster Speedy Tuesday #16!- Serviced w/Box,Papers $12000

Omega Speedmaster Speedy Tuesday #16!- Serviced w/Box,Papers $12000

Omega - Speedmaster Speedy Tuesday #16 · $12,000
Up for sale is the Speedy Tuesday ST1 #16, one of the coolest Speedmasters ever. It's in very good condition with minimal signs of wear.

  • Condition: very good condition, little sign of wear
  • Serviced: true
  • Service Date: about 1.5 years ago
  • Inclusions: box,warranty cards,accessories,extra Omega black nylon nato
Posted at
Apr 30, 2025, 9:51 AM
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[WTS][US] Omega Speedmaster Moonwatch Professional Brown Leather Strap + Buckle Clasp - 20mm

[US] Omega Speedmaster Moonwatch Professional Brown Leather Strap + Buckle Clasp - 20mm

Omega - Speedmaster Moonwatch Professional · $270
A Omega Speedmaster Moonwatch Professional available for sale, featuring a brown leather strap and buckle.

  • Condition: fantastic, with minor hairlines on clasp
  • Strap width: 20mm
  • Clasp condition: minor hairlines
Posted at
Apr 30, 2025, 8:49 AM
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[WTS] Omega Speedmaster Broad Arrow 3556.50.00 – Full Set – $2850 Shipped

Omega Speedmaster Broad Arrow 3556.50.00 – Full Set – $2850 Shipped

Omega - 3556.50.00 · $2,850
The Omega Speedmaster Broad Arrow Olympic Edition is a beautifully finished 42mm automatic chronograph with classic Broad Arrow hands, a date window, and small seconds.

  • Condition: Excellent - freshly serviced
  • Case size: 42mm
  • Movement type: Automatic chronograph
  • Features: Date window, small seconds, chronograph
Posted at
Apr 29, 2025, 11:17 PM
Active
View listing on r/WatchExchange