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 “Silver Snoopy Award” – Nylon Strap

Omega - 310.32.42.50.02.001 · $15,500

This Omega Speedmaster 'Silver Snoopy Award' features a silver dial with blue accents and a Snoopy subdial, set on a stainless steel case and paired with a blue nylon strap. It is powered by the manual wind Caliber 3861 movement.

Condition: New / Unworn
Material: Stainless Steel
Movement: Caliber 3861, Co-Axial Master Chronometer
Bracelet type: Blue Nylon Strap with Folding Clasp

Posted at

Dec 21, 2025, 2:25 PM

Active

View listing on r/WatchExchange

Omega Speedmaster w/ white gloss lacquer dial [ Ref. 310.30.42.50.04.001 ]

Omega - 310.30.42.50.04.001 · $7,500

This Omega Speedmaster Moonwatch Professional features a white gloss lacquer dial and is sold as a full set, including the Omega box and warranty card.

Condition: Great condition
Box And Papers: Full set
Warranty Card Date: Late 2024

Posted at

Dec 21, 2025, 12:05 PM

Active

View listing on r/WatchExchange

🔥Omega Speedmaster 42MM "Silver Snoopy Award"- Ref 310.32.42.50.02.001 (NEW / UNWORN : DEC 2025 COMPLETE SET)🔥

Omega - 310.32.42.50.02.001 · $15,599

This Omega Speedmaster 42MM is a 'Silver Snoopy Award' model, featuring a beautiful white dial and a stainless case.

Condition: Brand New/Unworn
Case Size: 42mm diameter
Dial Color: White

Posted at

Dec 21, 2025, 12:57 AM

Active

View listing on r/WatchExchange

Omega Speedmaster White Dial | 310.30.42.50.04.001 | 2024 - Mint | Complete Box & Papers 7,449 Shipped

Omega - 310.30.42.50.04.001 · $7,449

This Omega Speedmaster Moonwatch features a crisp white step dial with black hands and markers, giving the classic design a fresh aesthetic. Powered by Omega's Co-Axial Master Chronometer Calibre 3861, this hand-wound movement is METAS-certified for industry-leading precision.

Condition: Excellent
Case size: 42mm diameter
Movement: Co-Axial Master Chronometer Calibre 3861 (hand-wound)
Certification: METAS-certified

Posted at

Dec 20, 2025, 10:11 PM

Active

View listing on r/WatchExchange

Omega Speedmaster ‘Sapphire Sandwich’ Moonwatch White, B+P 2025

Omega - 31032425004001 · $6,900

This is a white Omega Speedmaster 'Sapphire Sandwich' Moonwatch, featuring a 42mm case size and Omega 3861 movement.

Condition: Very Good preowned condition with minor hairlines from light handling
Case size: 42mm
Movement: Omega 3861
Power reserve: 5 hours

Posted at

Dec 20, 2025, 9:16 PM

Active

View listing on r/WatchExchange

Omega Speedmaster FOIS | 310.30.40.50.06.001 | Complete Box & Papers 2024 | $6,849 Shipped

Omega - 310.30.40.50.06.001 · $6,849

This Omega Speedmaster "First Omega in Space" (FOIS) model is a historically faithful modern reference that pays homage to the watch worn by astronaut Walter Schirra during the Mercury-Atlas 8 mission. It has a straight-lug case, symmetrical profile, and hesalite crystal.

Condition: Excellent / near-mint
Case diameter: 40mm
Crystal material: hesalite
Year purchased: 2024

Posted at

Dec 20, 2025, 9:13 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Pro Moon Watch 3570.50 (Watch Only) $3800

OMEGA - 3570.50 · $3,800

This Omega Speedmaster Pro Moon Watch is being sold in pre-owned condition, with some marks on the hesalite crystal and signs of wear throughout the case, bezel, and bracelet.

Condition: Pre-owned
Case Size: 42mm diameter
Wrist Size Fit: 7 1/4 inch

Posted at

Dec 20, 2025, 6:59 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Dark Side of the Moon 311.92.44.30.01.001 | Ceramic |FULL SET

Omega - 311.92.44.30.01.001 · $7,850

This Omega Speedmaster Dark Side of the Moon features a full-ceramic case and buckle, presented in excellent condition.

Condition: Mint, like-new
Case material: Full ceramic
Year: 2019

Posted at

Dec 20, 2025, 6:57 PM

Active

View listing on r/WatchExchange

Omega Speedmaster “First Omega in Space” FOISRef: 310.30.40.50.06.001 | 2025 | Full Set | Very Good Condition | Active Factory Warranty

Omega - 310.30.40.50.06.001

This Omega Speedmaster is known as the 'First Omega in Space' with a FOIS reference number, specifically Ref: 310.30.40.50.06.001, from the year 2025.

Condition: Very Good

Posted at

Dec 20, 2025, 5:33 PM

Active

View listing on r/WatchExchange