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.

Buy Now on Jomashop

This is an affiliate link

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 "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 🔥$10,000🔥

OMEGA - 311.92.44.30.01.001 · $10,000

This OMEGA Speedmaster 'Dark Side of the Moon' Apollo 8 is a commemorative watch crafted from black ceramic, featuring a skeletonized dial and laser-ablated details to represent the lunar surface. It's powered by the Calibre 1869 movement with blackened bridges and mainplate.

Condition: UNWORN
Case size: 44.25mm diameter
Movement: Calibre 1869

Posted at

Apr 17, 2026, 10:12 PM

Active

View listing on r/WatchExchange

2015 Omega Speedmaster Grey Side of the Moon 311.93.44.51.99.001 Full Set $7,500

Omega - 311.93.44.51.99.001 · $7,500

A modern and highly distinctive take on the Speedmaster line featuring a full grey ceramic case and matching dial.

Condition: Excellent (pre-owned, minimal wear)
Case Size: 44.25mm
Case Material: Grey ceramic
Movement: Automatic chronograph (Omega Co-Axial Calibre 9300)

Posted at

Apr 17, 2026, 9:36 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Moonwatch White Dial 310.30.42.50.04.001

Omega - 310.30.42.50.04.001 · $7,800

This Omega Speedmaster Moonwatch features a white dial and is in overall mint condition.

Condition: mint condition
Accessories: full set - boxes, papers, warranty card, pictogram card, Master Chronometer card, extra links

Posted at

Apr 17, 2026, 9:19 PM

Active

View listing on r/WatchExchange

2023 Omega Speedmaster Dark Side of The Moon Apollo 8 Black 311.92.44.30.01.001 Full Set

Omega - 311.92.44.30.01.001 · $8,500

This listing is for a 2023 Omega Speedmaster Dark Side of The Moon Apollo 8, featuring a black ceramic case and leather strap with yellow accents.

Condition: Excellent preowned condition with no signs of wear on the case, bracelet, bezel or buckle. Strap has some small spots of wear
Case material: black ceramic
Case dimensions: 44.25mm diameter
Bezel: black ceramic

Posted at

Apr 17, 2026, 8:19 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Ref. 3510.50

Omega - 3510.50

The Omega Speedmaster Ref. 3510.50 is being listed for sale.

Posted at

Apr 17, 2026, 4:26 PM

Active

View listing on r/WatchExchange

Omega Speedmaster “Ed White” Cal. 321 Tropical Dial Heavy Patina (Serviced)

Omega - 105.003-65 · $9,850

This Omega Speedmaster Ed White Ref. 105.003-65 is a historically significant watch with a stunning brown tropical dial and matching tritium hands that glow under UV light. It's one of the most collectible variants among Speedmaster enthusiasts, featuring strong proportions and a well-preserved stainless steel case.

Condition: good condition
Case size: 39mm diameter
Year produced: 1965
Movement serviced: yes, in July 2025

Posted at

Apr 17, 2026, 1:06 PM

Active

View listing on r/WatchExchange

2026 Omega Dark Side of The Moon Apollo 8 Speedmaster w/ Rocketship 310.92.44.50.01.001 $12,499

Omega - 310.92.44.50.01.001 · $12,499

This 2026 Omega Dark Side of The Moon Apollo 8 Speedmaster is a high-end timepiece featuring a black ceramic case, black dial, and sapphire crystal. It has a 50-hour power reserve and is water-resistant up to 50m.

Condition: Excellent preowned condition, 9.9/10
Case size: 44.25mm diameter
Movement: 3869 caliber movement
Power reserve: 50 hours

Posted at

Apr 17, 2026, 12:52 PM

Active

View listing on r/WatchExchange