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 Racing - White Dial - 329.30.44.51.04.001 (excellent / 2024)

Omega - 329.30.44.51.04.001 · $6,450.006

Up for sale is an Omega Speedmaster Racing Master Co-Axial in White Dial, reference # 329.30.44.51.04.001. It comes with all boxes, papers, booklets, and Omega Warranty Card dated November 2024.

Condition: Excellent
Case Size: 44.25mm
Material: Stainless Steel
Movement: Master Co-Axial 9900 Chronometer

Posted at

Jun 13, 2025, 3:05 PM

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Omega Speedmaster '57 - 40.5mm Co-Axial - 332.10.41.51.01.001 ( excellent )

Omega - 332.10.41.51.01.001 · $6,250.006

This Omega Speedmaster '57 Novelties 2022 is a stainless steel watch with a 40.5mm case and 9906 Master Co-Axial Movement. It comes complete with all boxes, papers, booklets, hang tag and Omega Warranty Card dated September 2022.

Condition: Excellent Condition
Case size: 40.5mm
Movement type: 9906 Master Co-Axial

Posted at

Jun 13, 2025, 3:04 PM

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Omega Speedmaster Speedy Tuesday - MINT UNWORN $14,500

Omega - Speedmaster Speedy Tuesday ST1 · $14,500

Up for sale is THE Speedy Tuesday ST1, an UNWORN and MINT example of this hard-to-find watch.

Condition: Mint Unworn
Case material: Metal
Features: Includes box, warranty cards, accessories

Posted at

Jun 13, 2025, 1:35 PM

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View listing on r/WatchExchange

Omega Speedmaster Speedy Tuesday #16!- Serviced w/Box,Papers $12000

Omega - Speedmaster Speedy Tuesday #16 · $12,000

Up for sale is the Omega Speedmaster Speedy Tuesday ST1 #16, a very exclusive model in excellent condition. The watch includes its original box, warranty cards, accessories, and an extra Omega black nylon nato strap.

Condition: Very good condition, little sign of wear
Serviced: 1.5 years ago
Includes: box,warranty cards,accessories,extra Omega black nylon NATO
Payment Terms: PayPal,wire,venmo

Posted at

Jun 13, 2025, 1:34 PM

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1972 Omega Speedmaster Mark 3 Automatic Ref. 176.002 | $2,300

Omega - 176.002 · $2,300

The Omega Speedmaster Mark 3 is an important piece of history for Omega, featuring an automatic movement and date display. The watch has a stainless steel case with a mineral crystal and measures 41 x 51.6mm in size.

Condition: Good, with some scratches on the case and aging on the dial
Case Size: 41 x 51.6mm diameter
Thickness: 16.5mm
Crystal: Mineral

Posted at

Jun 13, 2025, 11:48 AM

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[US] Omega Speedmaster Chronoscope - White Panda Dial - 43mm - 329.30.43.51.02.002 - Full Set

Omega - 329.30.43.51.02.002 · $6,050

Up for sale is an Omega Speedmaster Chronoscope - White Panda Dial - 43mm that functions perfectly mechanically, without issue.

Condition: Fantastic condition with minor hairlines
Case size: 43mm diameter

Posted at

Jun 13, 2025, 8:24 AM

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Omega Speedmaster Moonwatch Professional White Sapphire Sandwich 42mm - 310.30.42.50.04.001

Omega - 310.30.42.50.04.001 · $7,692

This Omega Speedmaster Moonwatch Professional White Sapphire Sandwich is a 42mm stainless steel watch with white sapphire sandwich dial and features the Master Chronometer certification.

Condition: MINT condition, like new
Material: Stainless Steel
Size: 42mm diameter
Included With Warranty: true

Posted at

Jun 13, 2025, 2:16 AM

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