Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel - Moonshine Gold / Silver

Reference 310.20.42.50.02.001

Omega Speedmaster Professional Moonwatch 3861 Stainless Steel - Moonshine Gold / Silver

About this watch

The Omega Speedmaster Professional Moonwatch 310.20.42.50.02.001 is a stunning blend of classic design and cutting-edge technology, featuring a stainless steel case, Moonshine gold accents, and sophisticated chronograph functionality. At the heart of this timepiece is the Omega caliber 3861 movement, certified as a Master Chronometer by METAS and boasting advanced features like a co-axial escapement, silicon balance spring, and magnetic resistance of up to 15,000 gauss. The Speedmaster's ergonomic design ensures it sits comfortably on the wrist, while its 50-meter water resistance makes it practical for daily wear. This watch is incredibly versatile, adapting effortlessly from formal events to casual days out, and its durability is ensured by top-notch materials like ceramic, stainless steel, and Moonshine gold. With a price point that reflects its quality and heritage, the Omega Speedmaster Professional Moonwatch 3861 is an investment in horological history.

Buy Now on Jomashop

This is an affiliate link

Key Features

Omega caliber 3861 movement with co-axial escapement and silicon balance spring
50-meter water resistance for everyday wear
Chronograph functionality with precise timing and intuitive layout
Moonshine gold accents and stainless steel case for luxurious appearance
Sapphire glass for scratch-resistance and durability
Master Chronometer certification by METAS for high accuracy and reliability

Specifications

Brand

Omega

Family

Speedmaster

Model

Speedmaster Professional Moonwatch 3861 Stainless Steel - Moonshine Gold / Silver

Reference

310.20.42.50.02.001

Movement

3861

Movement Features

Small Seconds, Hours, Minutes
Chronograph
Chronometer

Case

42mm

Dial Color

Silver

Crystal

Sapphire

Water Resistance

Current Listings

Omega Speedmaster FOIS 40mm Numbered Edition – Excellent Condition, New Lincoln Bracelet, Professional Ed White Mod, Box + Warranty Card

Omega - FOIS · $4,250

Up for sale is my Numbered Editon Omega Speedmaster FOIS (First Omega in Space) in very good condition, featuring a professionally installed Ed White–style mod that gives it a beautifully vintage, classic Speedmaster look.

Condition: Excellent overall with light, honest wear
Bracelet: Uncle Seiko Lincoln bracelet, 6.75 inches long with extra links
Case Size: 40mm diameter

Posted at

Oct 26, 2025, 2:51 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Moonphase

Omega - 3575.20 · $5,225

Up for sale is an Omega Speedmaster Moonphase ref. 3575.20 in excellent condition! Very minimal signs of wear, runs great and includes full kit.

Condition: Excellent
Shipping restrictions: CONUS only

Posted at

Oct 26, 2025, 2:01 PM

Active

View listing on r/WatchExchange

2023 Omega Speedmaster Moonwatch Professional | 310.30.42.50.01.002 | Complete | Sapphire Sandwich | Speedy | Micro-adjust Clasp

Omega - 310.30.42.50.01.002 · $6,417

A gorgeous watch highlighted by the two sapphire crystals, and makes for arguably the perfect daily; comfortable, simple, and practical.

Condition: Excellent
Reference type: Professional
Crystal material: Sapphire
Movement: Calibre GA

Posted at

Oct 26, 2025, 12:26 PM

Active

View listing on r/WatchExchange

NEW 2025 Omega Speedmaster Professional Moonwatch ‘Silver Snoopy Award’ - Ref. 310.32.42.50.02.001 - $14,430

Omega - 310.32.42.50.02.001 · $14,430

The 'Silver Snoopy Award' 50th Anniversary edition Omega Speedmaster Professional Moonwatch features blue sub-dials and a bezel, along with a unique caseback.

Condition: Brand New
Year: 2025
Set Contents: full set with inner + outer box, cards, special loupe, cleaning cloth and instruction manuals

Posted at

Oct 26, 2025, 7:53 AM

Active

View listing on r/WatchExchange

2024 Omega Speedmaster Moonwatch Sapphire REF 31030425001002 Full kit (Box, Papers, Extra links)

Omega - 31030425001002 · $6,999

2024 Omega Speedmaster Moonwatch Sapphire in excellent condition, barely worn, and well-kept. Includes full box, papers, extra links, and owners manual.

Condition: Pre-owned (2024 piece, well kept and in amazing condition)
Year: 2024
Included Accessories: Full box, papers, extra links, owners manual

Posted at

Oct 26, 2025, 12:14 AM

Active

View listing on r/WatchExchange

Omega Speedmaster Reduced 3510.50 Recently Serviced

Omega - 3510.50.00 · $2,300

The Omega Speedmaster Reduced ref. 3510.50.00 delivers the iconic Moonwatch look in a more compact, automatic format, with its 39 mm stainless-steel case and black dial.

Condition: Excellent overall following a recent complete service
Case Diameter: 39mm
Case Material: Stainless steel
Bezel: Black aluminum tachymeter (minor mark near '60')

Posted at

Oct 25, 2025, 11:05 PM

Active

View listing on r/WatchExchange

Omega Speedmaster3590.50 – Unpolished Classic

Omega - 3590.50 · $55,000

a classic, unpolished Omega Speedmaster with a unique character

Material: steel
Band: leather strap

Posted at

Oct 25, 2025, 9:37 PM

Active

View listing on r/WatchExchange

: Omega Speedmaster Professional Moonwatch Full kit 12/24

Omega - Speedmaster Professional Moonwatch Hesalite · $4,950

This Omega Speedmaster Professional Moonwatch Hesalite is a full kit in very good condition. It features a Hesalite crystal and comes with a warranty card dated 12/24.

Condition: Very nice shape, small marks and scratches
Warranty card date: 12/24
Shipping method: FedEx

Posted at

Oct 25, 2025, 7:34 PM

Active

View listing on r/WatchExchange