Omega Speedmaster Speedmaster Professional Moonwatch 3861 Sedna Gold - Ruby / Black - Ruby / Bracelet

Reference 310.55.42.50.51.001

Omega Speedmaster Professional Moonwatch 3861 Sedna Gold - Ruby / Black - Ruby / Bracelet

About this watch

The Omega Speedmaster Professional Moonwatch 3861 Sedna Gold is a stunning blend of luxury and functionality, with its Sedna gold construction and intricate chronograph features. The watch's sheer elegance is undeniable, with a black sunburst finish contrasting beautifully with gem-set indexes and ruby accents. Certified as a Master Chronometer by METAS, the Omega caliber 3861 movement is an engineering marvel, resistant to magnetic fields up to 15,000 gauss. With small seconds, hours, and minutes hands, the chronograph functionality offers precision timing. The watch's durability is also noteworthy, with sapphire glass adding scratch resistance. The Sedna gold bracelet ensures a secure fit, while its adjustability makes it comfortable for wearers of all wrist sizes. This timepiece is not just a luxury item but a conversation starter, status symbol, and piece of horological history.
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Key Features

  • Omega caliber 3861 movement with Co-Axial escapement and silicon balance spring
  • Sedna gold construction with gem-set indexes and ruby accents
  • 50m water resistance with sapphire glass scratch resistance
  • Chronograph functionality with small seconds, hours, and minutes hands
  • Adjustable Sedna gold bracelet for secure fit on all wrist sizes

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Sedna Gold - Ruby / Black - Ruby / Bracelet
Reference
310.55.42.50.51.001
Movement
3861
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph
  • Chronometer
Case
Sedna Gold 42mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] Omega Speedmaster Racing Chronograph - Box & Papers 2024

Omega Speedmaster Racing Chronograph - Box & Papers 2024

Omega - 32930445101002 · $5,900
The Omega Speedmaster Racing Chronograph features a 44mm stainless steel case on a steel bracelet with deployant clasp, and is powered by the Omega Co-Axial Master Chronometer 9900.

  • Condition: Mint condition
  • Case size: 44mm
  • Bracelet material: stainless steel
  • Movement: Omega Co-Axial Master Chronometer 9900
Posted at
May 2, 2025, 1:28 PM
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[WTS] Omega Speedmaster Broad Arrow – Ref. 3594.50 – Excellent Condition – $3,250

Omega Speedmaster Broad Arrow – Ref. 3594.50 – Excellent Condition – $3,250

Omega - 3594.50 · $3,250
This Omega Speedmaster Broad Arrow is in excellent condition with minimal oxidation on the hands, making it a rare find for this reference.

  • Condition: Excellent
  • Bracelet Material: Stainless steel
  • Case Size: Not specified
Posted at
May 2, 2025, 7:13 AM
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[WTS] Omega Speedmaster Moonwatch 3861 Hesalite Bracelet 310.30.42.50.01.001 2021 $4,650

Omega Speedmaster Moonwatch 3861 Hesalite Bracelet 310.30.42.50.01.001 2021 $4,650

Omega - 310.30.42.50.01.001 · $4,650
This Omega Speedmaster Moonwatch is a 2022 model, featuring a Hesalite crystal and coming with its original bracelet. It has been very lightly used and shows some minor scratches on the case.

  • Condition: Very lightly used with some light scratches on the case
  • Year: 2022
  • Bracelet condition: mint
  • Case material: Hesalite
Posted at
May 2, 2025, 4:37 AM
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[WTS] Omega Speedmaster Broad Arrow 1957 321.10.42.50.01.001 - Automatic Co-Axial 3313

Omega Speedmaster Broad Arrow 1957 321.10.42.50.01.001 - Automatic Co-Axial 3313

Omega - 321.10.42.50.01.001 · $3,799
This Omega Speedmaster Broad Arrow features a 42mm case with a broad arrow handset and red '1957' marking, housing the Omega Caliber 3313C movement with tri-level co-axial escapement. It has a date quickset at 6 o'clock and comes with box and papers.

  • Case size: 42mm
  • Water resistance: 100m
  • Movement: Omega Caliber 3313C (based on Frederic Piguet 1285)
Posted at
May 1, 2025, 8:57 PM
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[WTS] Omega Speedmaster Date 3513.50

Omega Speedmaster Date 3513.50

Omega - 3513.50 · $1,800
A beautiful Omega Speedmaster Date in overall very good condition, with a black dial and comfortable bracelet.

  • Condition: Very good condition with normal wear on the case and bracelet
  • Movement: Cal 1152
  • Bracelet size: 6.75 inches
Posted at
May 1, 2025, 8:30 PM
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Omega Speedmaster Mark II / Mark 2 145.014 Vintage

Omega - 145.014 · $2,975.003
The Omega Speedmaster Mark II / Mark 2 ref. 145.014 from 1970 appears to be in excellent shape, with a strong movement and functioning chronograph.

  • Condition: all original condition with hairline scratches and original brushing
  • Bracelet size: 1158 bracelet sized to 6.9in wrist
  • Movement running status: running strong on timing machine
  • Service history: unknown
Posted at
May 1, 2025, 11:49 AM
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View listing on WatchUseek
Omega Speedmaster Mark II / Mark 2 145.014 Vintage

Omega Speedmaster Mark II / Mark 2 145.014 Vintage

Omega - 145.014 · $2,975.003
Early Speedmaster Mark 2 from 1970 in all original condition with no evidence of polishing or touching up. Hands and dial are in great shape with clean and consistent lume.

  • Condition: All original condition with hairline scratches on case, one gouge on bracelet.
  • Case size: 40mm diameter
  • Bracelet size: 6.9 inches
  • Bracelet type: 1158
Posted at
May 1, 2025, 11:48 AM
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[WTS] Omega Speedmaster Dark Side of the Moon “Apollo 8” Slider

Omega Speedmaster Dark Side of the Moon “Apollo 8” Slider

Omega - 311.92.44.30.01.001 · $8,198
This Omega Speedmaster Dark Side of the Moon 'Apollo 8' is a limited edition timepiece that honors the historic Apollo 8 mission, with a laser-ablated blackened movement and skeletonized dial. The watch features a manual-winding Caliber 1869 movement and is made from ultra-light and scratch-resistant black ceramic.

  • Condition: MINT
  • Case Material: black ceramic
  • Diameter: 44.25mm
  • Movement Type: manual-winding
Posted at
May 1, 2025, 10:41 AM
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[WTS] Omega Speedmaster premoon 105.012- 66CB Serviced

Omega Speedmaster premoon 105.012- 66CB Serviced

Omega - 105.012- 66CB · $8,900
This pre-moon Speedmaster features an original dial with tritium intact and a great bezel with minimal wear. The case has sharp edges and clear polished and brushed parts.

  • Condition: Serviced, good condition with original parts and slight wear on the dial and hands
  • Movement: 321 movement
  • Caseback: Spiralwinder display caseback
Posted at
May 1, 2025, 9:11 AM
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