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

Current Listings

Omega Speedmaster 3861 Sapphire Sandwich - Minty - May 2023 Card (under Omega warranty until 2028) - Quick Adjust Bracelet - Full Kit

Omega - 3861 · $6,999

A 2023 Omega Speedmaster Moonwatch 3861 sapphire sandwich, in great condition with a full kit and under warranty until 2028. The watch is running accurately at 0 spd.

Condition: great condition with minor desk dive scratches on the clasp
Warranty expiration date: May 2028
Retail price: $9K

Posted at

Mar 8, 2026, 2:04 PM

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Omega Speedmaster Professional Moonwatch Hesalite 3861 - Full set 2022

Omega - Speedmaster Professional Moonwatch Hesalite 3861

Year: 2022

Posted at

Mar 8, 2026, 1:27 PM

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NEW 2026 Omega reverse panda Speedmaster Professional

Omega - 310.30.42.50.01.004 · $9,500

This brand-new Omega Speedmaster Professional is in excellent condition and comes with all original packaging.

Condition: brand new, absolutely mint
Year of production: 2026
Case size: 42mm diameter

Posted at

Mar 8, 2026, 4:20 AM

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Omega Speedmaster “Silver Snoopy Award” 50th Anniversary Unworn (2024)

Omega - 310.32.42.50.02.001 · $15,400

A 2024 Omega Speedmaster Silver Snoopy Award 50th Anniversary, a highly collectible modern Speedmaster celebrating NASA's Silver Snoopy Award.

Condition: New / Unworn
Case size: 42mm diameter
Movement: Omega Co-Axial Master Chronometer Caliber 3861
Strap material: Blue nylon

Posted at

Mar 7, 2026, 10:20 PM

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OMEGA Speedmaster 38 Co-Axial Chronograph Men's Watch - 324.30.38.50.02.001

OMEGA - 324.30.38.50.02.001 · $2,100

A Omega Seamaster watch, sold as new with original accessories and warranty cards.

Condition: Pre-owned with minor wear marks on bracelet
Purchase location: Goldsmiths
Includes original accessories: yes

Posted at

Mar 7, 2026, 10:18 PM

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Omega Speedmaster 3570.50-$4200

Omega - 3570.50 · $4,200

A Omega Speedmaster in good condition, comes with original bracelet and forstner.

Condition: good
Seller Type: established eBay account
Additional Items: eBay authentication card, original bracelet, forstner

Posted at

Mar 7, 2026, 10:12 PM

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Omega Speedmaster Moonwatch Professional Sapphire 3861 (310.30.42.50.01.002) – 2025 Full Set – $6350

Omega - 310.30.42.50.01.002 · $6,350

This Omega Speedmaster Moonwatch Professional features the Master Chronometer Calibre 3861, a manual wind movement with 50-hour power reserve and anti-magnetic to 15,000 gauss. The watch has a 42mm stainless steel case and black stepped dial.

Condition: Excellent overall condition, light signs of wear on the bracelet and clasp
Movement: Omega Co-Axial Master Chronometer Calibre 3861 (manual wind, 50-hour power reserve, anti-magnetic to 15,000 gauss)
Case size: 42mm
Water resistance: 50m

Posted at

Mar 7, 2026, 9:44 PM

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

Omega - 145.022-69 · $5,250

This Omega Speedmaster Moonwatch presents beautifully in full steel, showcasing a strong and sharp case with thick lugs that retain their original shape.

Condition: Serviced with minor polishing in the past
Diameter: 42mm
Year: 1969
Movement: 861 caliber movement

Posted at

Mar 7, 2026, 9:26 PM

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