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 Chronometer 3210.50.00 — Cal. 1164 (Serviced) — $2,099 Shipped (Tariff Coverd)

Posted at

Apr 22, 2026, 1:29 PM

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Omega Speedmaster Professional 🌘 Moonwatch 🌒 Sapphire Sandwich LNIB 9/25

Omega - 310.30.42.50.01.002 · $6,875

A Omega Speedmaster Professional in like new condition with a sapphire sandwich case and reference number 310.30.42.50.01.002.

Condition: Like new
Missing items: outer box, user's manual, Moonwatch booklet, outer pillow

Posted at

Apr 22, 2026, 11:58 AM

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Omega Speedmaster Professional Reverse New Apr 2026, $10.2k

Omega - 310.30.42.50.01.004 · $10,200

This Omega Speedmaster Professional Reverse is a brand new watch with a reference number of 310.30.42.50.01.004, coming with its original box and April 2026 warranty.

Condition: Brand New
Shipping cost: $200 for USA shipping
Payment methods: Wire or Credit Card (+4.9% and 4 days clearance)
Warranty: Apr 2026 warranty

Posted at

Apr 22, 2026, 9:55 AM

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2021 Omega Speedmaster Racing 329.32.44.51.01.001 Orange Full Set - $6,495

Omega - 329.32.44.51.01.001 · $6,495

A 2021 Omega Speedmaster Racing in excellent condition with minimal signs of wear, featuring a orange full set including the watch, inner and outer box, card holder, international warranty card, pictograms card, master chronometer card, and instructions manual.

Condition: Excellent condition with minimal signs of wear
Year: 2021
Contents: Watch, Inner & Outer Box, Card Holder, International Warranty Card, Pictograms Card, Master Chronometer Card, Instructions Manual
Shipping Method: Fedex

Posted at

Apr 22, 2026, 9:47 AM

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2024 OMEGA SPEEDMASTER WHITE DIAL 310.30.42.50.04.001 $7299

OMEGA - 310.30.42.50.04.001 · $7,299

2024 OMEGA SPEEDMASTER WHITE DIAL for sale

Posted at

Apr 22, 2026, 9:23 AM

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OMEGA Speedmaster Professional Moonwatch Sapphire Sandwich 311.30.42.30.01.006 Full Set

OMEGA - 311.30.42.30.01.006 · $6,300

The OMEGA Speedmaster Professional Moonwatch Sapphire Sandwich is a highly sought-after watch featuring a sapphire crystal configuration, display caseback, and classic Moonwatch design.

Condition: Mint condition with hairline scratches on clasp and around the case
Band type: Original bracelet, nylon strap

Posted at

Apr 22, 2026, 1:38 AM

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2021 Omega Speedmaster Professional Moonwatch 310.30.42.50.01.002 Full set Excellent condition

Omega - 310.30.42.50.01.002 · $6,400

The Omega Speedmaster Professional Moonwatch is a historic watch that has been in high demand since the Artemis missions. It comes with its full set, including papers and cards.

Condition: Excellent condition
Papers: Full set of documents and booklets, including the legendary moonwatch booklet

Posted at

Apr 22, 2026, 12:13 AM

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Omega Speedmaster “First Omega in Space” 39.7mm

Omega - 310.32.40.50.06.001 · $6,700

This Omega Speedmaster "First Omega in Space" is a historically significant variant that pays tribute to the first Omega ever worn in space by astronaut Wally Schirra on October 3rd, 1962. The watch features a symmetrical design with straight lugs and a black aluminium bezel with a tachymeter scale.

Condition: Excellent
Case size: 39.7mm diameter
Movement type: Manually wound
Water resistance depth: 50m

Posted at

Apr 21, 2026, 10:25 PM

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1995 Omega Speedmaster Date Mark 40 White Guilloche Dial 3513.33.00 | Great Condition (Serviced) | $2750

Omega - 3513.33.00 · $2,750

The Omega Speedmaster Date Mark 40 3513.33.00 is a mid-90s chronograph with a stainless steel case, black tachymeter bezel and white dial. It features the classic tri-compax layout, quickset date at 3, and is powered by the Omega Cal. 1152 based on the Valjoux 7750.

Condition: Great Condition (Serviced)
Case size: 39mm diameter
Lug width: 18mm
Thickness: 14mm

Posted at

Apr 21, 2026, 8:48 PM

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