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 Moonwatch Professional Sapphire 310.30.42.50.01.002 – Full Set – $6,400 Shipped

Omega - 310.30.42.50.01.002 · $6,400

A 2022 Omega Speedmaster Moonwatch Professional Sapphire, featuring a sapphire crystal and display caseback, with a manual-wind chronograph movement.

Condition: Great
Case size: 42mm diameter
Movement: Manual-wind chronograph (Omega Caliber 3861)
Crystal: Sapphire

Posted at

Dec 22, 2025, 7:27 PM

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Omega Speedmaster 3590.50

Omega - Speedmaster 3590.50

A summary of the watch in the listing is not provided.

Posted at

Dec 22, 2025, 4:21 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 · $5,425

Condition: serviced, professionally serviced in November 2022
Case size: 42mm
Movement: 861 caliber
Bracelet size: up to 7.5” (19cm)

Posted at

Dec 22, 2025, 4:08 PM

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Omega Speedmaster racing 9900 44.25mm 329.30.44.51.01.001

Omega - 329.30.44.51.01.001 · $6,200

This Omega Speedmaster racing is a 44.25mm model with a factory warranty until AUG 2025, described as really clean and full set.

Condition: Mint and full set
Case Size: 44.25mm diameter

Posted at

Dec 22, 2025, 3:46 PM

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OMEGA Speedmaster Calibre 321 "Ed White" Ref. 311.30.40.30.01.001 - ULTIMATE SET!

OMEGA - 311.30.40.30.01.001 · $18,000

The OMEGA Speedmaster Calibre 321 Ref. 311.30.40.30.01.001 is a faithful recreation of the reference 105.003, famously worn by astronaut Ed White during America's first spacewalk.

Condition: UNWORN
Material: stainless steel
Size: 39.7mm diameter
Caseback material: sapphire

Posted at

Dec 22, 2025, 9:11 AM

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OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET!

OMEGA - 311.92.44.30.01.001 · $10,000

The OMEGA Speedmaster 'Dark Side of the Moon' Apollo 8 commemorates the 50th anniversary of the Apollo 8 mission, a technical and artistic tribute to space exploration. This watch features a black ceramic case, skeletonized dial, laser-ablated lunar surface, and Calibre 1869 movement with blackened bridges.

Condition: UNWORN
Case material: black ceramic
Diameter: 44.25mm
Movement: Calibre 1869

Posted at

Dec 22, 2025, 9:06 AM

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