Omega Speedmaster Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet

Reference 310.55.42.50.13.001

About this watch

The Omega Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet is a masterpiece of horology, blending art, history, and cutting-edge technology. Crafted from Sedna Gold, this watch boasts a unique color that's both warm and striking. Its round shape and sunburst brown finish give it a luxurious feel, while the diamond-set bezel adds a touch of elegance. The 3861 is equipped with a chronograph feature, allowing you to measure elapsed time with precision. At its heart lies the Omega caliber 3861, an updated version of the legendary caliber 861/1861, featuring a co-axial escapement and silicon balance spring for accuracy and reliability. Master Chronometer certified by METAS, this watch has undergone rigorous testing to withstand magnetic fields of up to 15,000 gauss. Its sleek design and exceptional craftsmanship make it a standout in any collection. Whether you're at a formal event or a casual outing, this watch is sure to turn heads.

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Key Features

Sedna Gold case
Manual-winding chronograph movement
Co-axial escapement and silicon balance spring
Master Chronometer certified by METAS
Diamond-set bezel
Water resistance up to 50 meters
42.00 mm diameter and 13.18 mm height

Specifications

Brand

Omega

Family

Speedmaster

Model

Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet

Reference

310.55.42.50.13.001

Movement

3861

Movement Features

Small Seconds, Hours, Minutes
Chronograph
Chronometer

Case

Sedna Gold 42mm

Dial Color

Brown

Crystal

Sapphire

Water Resistance

Current Listings

Omega Speedmaster “The 1957 Trilogy” 60th Anniversary Limited Edition 311.10.39.30.01.001 - With accessories - Repost

Omega - 311.10.39.30.01.001 · $6,699

The Omega Speedmaster 'The 1957 Trilogy' is a limited edition watch celebrating the 60th anniversary of this iconic model.

Condition: Excellent pre-owned condition
Accessories: booklets, straps, strap changer, travel case, tag Double box, open card

Posted at

Dec 22, 2025, 12:11 AM

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2025 Omega Speedmaster “White Dial” – Ref. 310.30.42.50.04.001 – 2025 – Full Set – Excellent Condition

Omega - 310.30.42.50.04.001 · $7,750

This is a 2025 Omega Speedmaster with a white dial, full set and in phenomenal condition.

Condition: Excellent
Case size: 42mm
Movement: Omega Co-Axial Master Chronometer chronograph

Posted at

Dec 21, 2025, 9:30 PM

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Omega Speedmaster Professional Moonwatch Tropical Brown Dial Heavy Patina Blue Insert 1969 (Box/Serviced) 🟤

Omega - 145.022-69 · $15,150

A 1969 Omega Speedmaster Moonwatch in beautiful condition, featuring a tropical brown dial with heavy yellow patina and a blue bezel.

Condition: Beautiful condition, with thick and sharp lugs, but polished in the past.
Size: 42mm
Year: 1969
Case material: unknown

Posted at

Dec 21, 2025, 9:19 PM

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2025 Omega Speedmaster Two Counters Titanium Blue 44.25mm Full Set

Omega - 311.93.44.51.03.001 · $6,533

A modern take on the Speedmaster, this titanium two-register chronograph provides a lightweight feel and refined appearance with a blue dial and bezel.

Condition: Excellent
Movement: 9300 Co-Axial movement
Power reserve: 60h power reserve
Case material: Titanium

Posted at

Dec 21, 2025, 8:40 PM

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Omega Speedmaster FOIS, Numbered Edition, Very Clean (2017), $4200 shipped

Omega - 311.32.40.30.01.001 · $4,200

2017 Omega Speedmaster FOIS, Numbered Edition, in very clean condition, with smooth action and a manual-winding movement.

Condition: Very good
Case Diameter: 39.7mm
Thickness: 14.00mm
Lug To Lug: 47.00mm

Posted at

Dec 21, 2025, 5:06 PM

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

Omega - 105.003-65 · $10,995

This Omega Speedmaster Ed White Ref. 105.003-65 is a historic and collectible variant, featuring a stunning brown tropical dial with rich patina and tritium hands that glow under UV light.

Condition: very good
Diameter: 39mm
Year: 1965
Material: stainless steel

Posted at

Dec 21, 2025, 3:19 PM

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Omega Speedmaster Reduced 39mm - Mother of Pearl Dial - Price Reduced ‼️

Omega - Speedmaster Reduced 39mm · $2,450

This Omega Speedmaster features a unique Mother of Pearl dial that stands out, and comes with a factory white strap and buckle.

Condition: decent condition
Case Material: unknown
Bezel Condition: light hairlines throughout

Posted at

Dec 21, 2025, 2:54 PM

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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

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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

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