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

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Posted at

Dec 5, 2025, 2:53 PM

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A Omega Speedmaster Moonwatch Professional with a 42mm white dial.

Condition: In very good condition, rated at 9.7/10
Box And Papers: true
Year Of Manufacture: 2024

Posted at

Dec 5, 2025, 10:31 AM

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This Omega Speedmaster Ed White Ref. 105.003-65 is a historic and collectible variant with a stunning brown tropical dial, developed rich patina over time. It has a stainless steel case in strong proportions and matching tritium hands intact under UV light.

Condition: Very good condition
Size: 39mm
Year: 1965
Movement serviced: July 2023

Posted at

Dec 5, 2025, 9:35 AM

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Condition: Excellent condition
Year: 2018
Strap material: brown leather

Posted at

Dec 4, 2025, 9:23 PM

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Omega "Silver Snoopy" Speedmaster 2025

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A commemorative Omega Speedmaster Silver Snoopy Award presented in brand new condition, honoring NASA's recognition of Omega's role in the safe return of Apollo 13.

Condition: Brand new, unworn
Case size: 42mm
Diameter: 42mm
Water resistance: 50m depth rating

Posted at

Dec 4, 2025, 6:20 PM

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[WTS] Omega Speedmaster 1957 Sapphire Sandwich - Great Condition - Same Dimensions as Moonwatch + Same Iconic Subdial spacing but more practical daily (100m WR, Coaxial Automatic, Date, Buttery Column Wheel Chrono) - Amazing and Underrated - FULL KIT + 3861 style bracelet - $4600 shipped CONUS

Omega Speedmaster 1957 Sapphire Sandwich - Great Condition - Same Dimensions as Moonwatch + Same Iconic Subdial spacing but more practical daily (100m WR, Coaxial Automatic, Date, Buttery Column Wheel Chrono) - Amazing and Underrated - FULL KIT + 3861 style bracelet - $4600 shipped CONUS

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A modern Omega Speedmaster variant, carrying over classic proportions of the current Moonwatch but with upgrades for a more practical daily wearer. It has a matte sub-dial texture, gloss-lacquer black backdrop, and an applied Omega logo. The watch is running strong and still has the red factory dot on the caseback.

Condition: Great condition, some small dings on the bezel edge and some minor scuffs throughout
Case dimensions: Same as Moonwatch
Movement type: Co-Axial Automatic
Water resistance: 100m

Posted at

Dec 4, 2025, 2:46 PM

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Omega Speedmaster Day Date Panda 323.30.40.40.04.001 40mm

Omega - 323.30.40.40.04.001 · $3,499

The Omega Speedmaster Day Date Panda is a 40mm watch with a distinctive design.

Bracelet length: 7.5 inches

Posted at

Dec 4, 2025, 2:23 PM

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Omega Speedmaster Reduced Ref. 3518.50 - Michael Schumacher LE

Omega - 3518.50 · $3,550

The Omega Speedmaster Racing Michael Schumacher Limited Edition, a highly collectible model produced as part of Omega’s tribute to Formula 1 legend Michael Schumacher. This limited edition watch is one of 6000 produced and comes in excellent condition.

Condition: Excellent overall condition with light signs of wear
Limited edition quantity: 6000
Case condition: Excellent overall condition with only light signs of wear consistent with careful use
Dial condition: Perfect condition — no blemishes, discoloration, or lume degradation

Posted at

Dec 4, 2025, 11:55 AM

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🔥OMEGA SPEEDMASTER MOONWATCH PROFESSIONAL SAPPHIRE SANDWICH 310.30.42.50.01.002 COMPLETE 11/2025 BRAND NEW🔥

OMEGA - 310.30.42.50.01.002 · $7,300

This OMEGA Speedmaster Moonwatch Professional Sapphire Sandwich is a brand new, unworn watch with a black dial and stainless steel case.

Condition: BRAND NEW/UNWORN
Case size: 42mm diameter
Material: Stainless Steel

Posted at

Dec 3, 2025, 9:48 PM

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