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 Date 3513.30 $2,200

Omega - 3513.30 · $2,200

The Omega Speedmaster Date features a clean sunburst textured silver dial and runs on the Omega 1152, Valjoux 7750 date automatic chronograph with in-house branding. It has a classic polished bezel and an unmistakable Speedmaster design language.

Condition: Preowned - Good
Box and papers included: Yes
Wrist size compatibility: up to max 7.75 inch

Posted at

Apr 16, 2026, 10:08 AM

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Omega Speedmaster 40 3211.31

Omega - 3211.31 · $2,350

This is an Omega Speedmaster 40mm watch, a popular choice for its sleek design and reliable movement.

Condition: Minor scratch on crystal
Case diameter: 40mm

Posted at

Apr 16, 2026, 10:08 AM

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Omega Speedmaster Sedna Gold,New 2026, 22k

Omega - 310.63.42.50.01.001 · $22,000

A brand new Omega Speedmaster Sedna Gold, reference number 310.63.42.50.01.001.

Condition: New
Serial Number: 310.63.42.50.01.001
Warranty Years: 2 (2026-2028)
Box And Papers: true

Posted at

Apr 16, 2026, 9:56 AM

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2025 Omega Speedmaster Sedna Gold 310.60.42.50.01.001 — Like New Condition, Box & Papers

Omega - 310.60.42.50.01.001 · $29,500

The Omega Speedmaster Sedna Gold is a modern take on the iconic Moonwatch design, featuring Sedna gold and a rich black dial with contrasting subdials. It's powered by a manual-wind movement that blends classic heritage with modern performance.

Condition: Like new, small ding on bezel near 12 o'clock
Box Papers: Yes
Movement: Master Chronometer manual-wind

Posted at

Apr 16, 2026, 9:08 AM

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Omega Speedmaster Racing 40mm - Reverse Panda - Jan 2026 Full Set - Warranty until 2031

Omega - 326.30.40.50.01.002 · $3,450

This is a rare 'fresh' example of the Omega Speedmaster Racing series, purchased from an AD in Japan on January 20, 2026, and featuring a black dial with silver sub-dials.

Condition: Mint, with minor scuff on clasp
Case size: 40mm diameter
Movement: Omega Calibre 3330, Co-Axial Chronometer with Si14 Silicon Balance Spring
Power reserve: 52 hours

Posted at

Apr 15, 2026, 11:27 PM

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Omega Speedmaster Date 3211.31.00 — Panda Dial — Big Seahorse Caseback — Fresh Service — $2599 Shipped (Tariff Covered)

Omega - 3211.31.00 · $2,599

Up for sale is an Omega Speedmaster Date featuring a clean silver ‘panda’ dial with black subdials and subtle red accents. The stainless steel case measures 40mm in diameter, approximately 46mm lug-to-lug, ~15mm thickness, and 20mm lug width.

Condition: pre-owned, unpolished case with honest wear
Case size: 40mm diameter
Lug-to-lug length: 46mm
Thickness: ~15mm

Posted at

Apr 15, 2026, 10:20 PM

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View listing on r/WatchExchange