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 Hesalite 3861, Dated 2024

Omega - 3861

Posted at

Jan 22, 2026, 2:18 PM

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

Omega - 145.022-69 · $14,995

This is a rare Omega Speedmaster Moonwatch from 1969, featuring a super tropical brown dial and a blue bezel with dot-over-90. The watch has been professionally serviced and runs properly.

Size: 42mm
Year: 1969
Box: true

Posted at

Jan 22, 2026, 10:54 AM

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Omega Speedmaster Professional Moonwatch Full Steel 145.022-69 Ghost Bezel Yellow Patina Step Dial 1969 (Serviced) 🔥

Omega - 145.022-69 · $5,425

This Omega Speedmaster Moonwatch presents beautifully in full steel, showcasing a strong and sharp case with thick lugs that retain their original shape. The original step dial displays a warm yellow patina across the hour markers and matching hands, creating a cohesive vintage appeal.

Condition: Serviced, excellent definition
Year: 1969
Size: 42mm diameter
Movement: 861 caliber

Posted at

Jan 22, 2026, 10:19 AM

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Omega Speedmaster 3861 Sapphire Sandwhich

Omega - 3861 · $6,100

This is a 2022 Omega Speedmaster 3861 on warranty card, sized for a 7-inch wrist. It comes with additional accessories and has shown signs of strap change wear.

Condition: Good
Warranty: Yes, on warranty card
Size adjustments: [object Object]
Accessories: New quick adjust clasp,Old clasp with micro adjustment tool,Uncle Seiko 1.5 link for dialing in fit

Posted at

Jan 22, 2026, 8:52 AM

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2023 Omega Speedmaster Calibre 321 “Ed White” 311.30.40.30.01.001 — Excellent Condition, Box & Papers

Omega - 311.30.40.30.01.001

2023 Omega Speedmaster Calibre 321 'Ed White' in excellent condition, including box and papers.

Condition: Excellent Condition

Posted at

Jan 22, 2026, 8:22 AM

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Omega Speedmaster Legend Schumacher edition ref 3506.61 MINT (box + warranty/picto/chronometer cards)

Omega - 3506.61 · $4,400

This Omega Speedmaster Legend Schumacher edition features a red dial, special collection engraved case back and is in mint condition with all original accessories.

Condition: Mint (unworn)
Bracelet size: full links
Case back: special collection engraved

Posted at

Jan 21, 2026, 11:10 PM

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Omega Speedmaster Day-Date Reduced ref 3222.80 MINT (box + warranty card)

Omega - 3222.80 · $3,400

This Omega Speedmaster Day-Date is a stunning example of the reduced model, featuring day, date, month, chronograph, and 24-hour indicators with a vibrant blue dial and stainless steel bracelet. The watch includes original box, warranty card, and operating manual.

Condition: Mint (unworn)
Day-date: includes day, date, month, chronograph, and 24-hour indicators
Box: included in sale
Warranty-card: included in sale

Posted at

Jan 21, 2026, 9:18 PM

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