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 Rattrapante Split Seconds 3540.50 - Carbon Dial - $2600 SHIPPED

Omega - 3540.50 · $2,600

This Omega Speedmaster Rattrapante Split Seconds features a rare reference with a rattrapante (split-seconds) chronograph and a robust automatic movement. The watch has a 42mm diameter and a beautiful 3D Carbon Dial.

Condition: Good condition with light scratches on the case, bezel and bracelet.
Case Size: 42mm
Dial Material: Carbon

Posted at

Oct 23, 2025, 8:01 PM

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Omega Speedmaster. Mother of pearl dial. 39mm. Sapphire Crystal. Automatic. Olympics Special Edition.

Omega - Speedmaster · $2,295

This Omega Speedmaster is a 39mm automatic watch featuring a mother of pearl dial and sapphire crystal. It's an Olympics Special Edition model.

Condition: Clean
Diameter: 39mm
Case material:
Movement: Automatic

Posted at

Oct 23, 2025, 7:27 PM

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BNIB 2025 OMEGA Speedmaster Moonwatch Professional 310.30.42.50.01.001 Full Set 5 Year Warranty

OMEGA - 310.30.42.50.01.001 · $6,300

A brand new, unworn OMEGA Speedmaster Moonwatch Professional with a full set of accessories and a 5-year factory warranty.

Condition: New, unsized/unworn
Size: 42mm diameter
Year: 2025
Warranty: 5 year factory warranty

Posted at

Oct 23, 2025, 7:23 PM

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Reduced Price! Omega Speedmaster “Triple Date” 3521.30.00 – Fully Overhauled by Omega Service Center (Jan 2025) – $2,175 OBO Shipped (CONUS)

Omega - 3521.30.00 · $2,175

For sale is my Omega Speedmaster Chronograph 'Triple Date' (Ref. 3521.30.00), a fully overhauled timepiece with excellent condition and functionality.

Condition: Excellent post-service condition — running perfectly
Case Material: stainless steel
Case Size: 39mm diameter
Lug Width: 18mm

Posted at

Oct 23, 2025, 2:49 PM

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Omega Speedmaster Apollo 17 45th Anniversary (2-yr warranty) Ref: 311.30.42.30.03.001

Omega - 311.30.42.30.03.001 · $7,600

This Omega Speedmaster Apollo XVII is a limited edition watch commemorating the 45th anniversary of the final moon landing in 1972, featuring a polished blue ceramic dial and stainless steel case.

Condition: Very good condition with slight imperfections on the dial
Case Diameter: 42mm
Water Resistance: 50m / 167ft
Movement Type: Manual-Winding Chronograph Movement

Posted at

Oct 23, 2025, 9:37 AM

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Omega Speedmaster Moonwatch Professional Moonshine Gold 42mm Complete Set 310.62.42.50.99.001

Omega - 310.62.42.50.99.001 · $23,895

This Omega Speedmaster Moonwatch Professional features a 18kt moonshine gold case with a gold and black dial, anti-magnetic co-axial escapement, and comes in its original box and papers.

Condition: Excellent condition with little to no signs of wear
Movement: Mechanical (Automatic)
Case Size: 42mm diameter
Water Resistance: 50m depth rating

Posted at

Oct 23, 2025, 8:43 AM

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Omega Speedmaster 311.93.44.51.99.001 Grey Side of the Moon 2018 Year

Omega - 311.93.44.51.99.001 · $8,000

This Omega Speedmaster Grey Side of the Moon is a 2018 model, featuring a pre-owned watch in excellent condition with minimal scratches.

Condition: Preowned, minor hairline scratches and possibly a clean crystal with marks under strong magnification
Year: 2018
Shipping method: FedEx, insured, 2-day shipping

Posted at

Oct 23, 2025, 1:25 AM

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