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

Reference 310.55.42.50.51.001

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

2020 Omega Speedmaster FOIS Ref: 311.32.40.30.01.001 B+P (Factory Modded Dial)

2020 Omega Speedmaster FOIS Ref: 311.32.40.30.01.001 B+P (Factory Modded Dial)

The watch is a 2020 Omega Speedmaster First Omega In Space 'FOIS' model with a factory-modded dial, featuring a 40mm case and black tachymeter bezel.

  • Condition: Excellent
  • Case size: 40mm diameter
  • Bezel type: black tachymeter bezel
  • Dial type: black chronograph dial with applied logo
Posted at
Mar 3, 2025, 5:33 PM
Active
2019 Omega Speedmaster First Omega In Space "FOIS" Ref: 311.32.40.30.01.001

2019 Omega Speedmaster First Omega In Space "FOIS" Ref: 311.32.40.30.01.001

2019 Omega Speedmaster First Omega In Space 'FOIS' with a 40mm case, black tachymeter bezel, and black chronograph dial.

  • Condition: Excellent with some wear from use
  • Case size: 40mm diameter
  • Bracelet type: factory Omega 19mm 1564/975
Posted at
Mar 3, 2025, 5:31 PM
Active
Omega 310.32.42.50.02.001 Speedmaster 50th Anniversary Snoopy Watch

Omega 310.32.42.50.02.001 Speedmaster 50th Anniversary Snoopy Watch

Omega - 310.32.42.50.02.001 · $15,650
This is a Speedmaster Professional Moonwatch Apollo 13 50th Anniversary Snoopy Watch, a special edition of the iconic Speedmaster series.

  • Serial numbers: available upon request
Posted at
Mar 3, 2025, 5:15 PM
Active
>>ReDuCeD FuRtHeR<< VINTAGE OMEGA SPEEDMASTER PROFESSIONAL PRE-MOON 145.022-69

>>ReDuCeD FuRtHeR<< VINTAGE OMEGA SPEEDMASTER PROFESSIONAL PRE-MOON 145.022-69

Omega - 145.022-69ST · $3,450
A pre-moon Omega Speedmaster Professional reference 145.022-69ST featuring Omega calibre 861 and a 29 million serial from 1970. The watch has a good vintage condition with a UNPOLISHED case and sharp bevels.

  • Condition: Good vintage condition, UNPOLISHED case
  • Movement: Omega calibre 861
  • Case size: 42 mm in diameter
  • Caseback: Hippocampus caseback
Posted at
Mar 1, 2025, 4:12 PM
Active
UNWORN 2024 OMEGA 332.10.41.51.01.001 Speedmaster '57 with Box & Papers

UNWORN 2024 OMEGA 332.10.41.51.01.001 Speedmaster '57 with Box & Papers

This is a brand new, unworn Omega Speedmaster '57 model number 332.10.41.51.01.001 with its original box and papers. The watch features a stainless steel case and black dial.

  • Condition: UNWORN
  • Case Size: 40.5mm diameter
  • Material: Stainless Steel
  • Dial: Black
Posted at
Mar 1, 2025, 12:27 PM
Active
Omega Speedmaster Professional Moonwatch Chronograph 3592.50 Tritium 863 Movement

Omega Speedmaster Professional Moonwatch Chronograph 3592.50 Tritium 863 Movement

Omega - 3592.50 · $4,290
This Omega Speedmaster Professional Moonwatch Chronograph features a 42mm stainless steel case and mechanical manual movement.

  • Condition: 90%
  • Case diameter: 42mm
  • Movement type: Mechanical Manual
  • Bracelet type: 1479 Bracelet
Posted at
Mar 1, 2025, 10:34 AM
Active
Omega Speedmaster Reduced Mop Dial Automatic 3534.70.00

Omega Speedmaster Reduced Mop Dial Automatic 3534.70.00

Omega - 3534.70.00 · $2,210
The Omega Speedmaster Reduced Mop Dial Automatic is a chronograph watch with a stainless steel case and mechanical automatic movement.

  • Condition: 90%
  • Size: 38mm diameter
  • Case material: Stainless Steel
Posted at
Feb 28, 2025, 11:39 AM
Active
Omega SPEEDMASTER ANNIVERSARY SERIES FIRST OMEGA IN SPACE 2024 FULL SET

Omega SPEEDMASTER ANNIVERSARY SERIES FIRST OMEGA IN SPACE 2024 FULL SET

Omega - 31030405006001 · $7,425
This 2024 Omega Speedmaster Anniversary Series is a tribute to the first Omega watch worn in space, featuring a stainless steel case with sapphire crystals and a dark blue dial. The watch is powered by an Omega 3861 manual winding movement and comes with a full set of packaging, including double boxes and a complete manual.

  • Condition: Excellent
  • Movement: Omega 3861 manual winding
  • Case material: Stainless steel
  • Crystal type: Sapphire
Posted at
Feb 27, 2025, 10:05 PM
Active
OMEGA Speedmaster Racing 329.32.44.51.06.001

OMEGA Speedmaster Racing 329.32.44.51.06.001

The OMEGA Speedmaster Racing is a tribute to the brand's rich motorsport heritage, featuring a sleek design with a bold black dial and orange accents.

  • Condition: Excellent, lightly worn
  • Movement: Caliber 9900
  • Case diameter: 44.25mm
  • Water resistance: 50m
Posted at
Feb 27, 2025, 7:25 PM
Active