Omega Speedmaster Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet

Reference 310.55.42.50.13.001

Omega Speedmaster Professional Moonwatch 3861 Sedna Gold - Diamond / Brown / Bracelet

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
50

Current Listings

[WTS] Omega Speedmaster 105-002-62 -factory 7912 - 6 endlinks 24 links - no stretch. Perfect dial. $20,000 super nice example.

Omega Speedmaster 105-002-62 -factory 7912 - 6 endlinks 24 links - no stretch. Perfect dial. $20,000 super nice example.

Omega - 105-002-62 · $20,000
This Omega Speedmaster is a super nice example with no stretch and a perfect dial.

  • Endlink count: 24
  • Stretch: no stretch
Posted at
Mar 2, 2026, 1:36 PM
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[WTS] Omega Speedmaster Professional Sapphire Sandwich (2025) – Adjustable Clasp – Near Mint – $6,800

Omega Speedmaster Professional Sapphire Sandwich (2025) – Adjustable Clasp – Near Mint – $6,800

Omega - Speedmaster Professional Moonwatch Sapphire Sandwich · $6,800
The Omega Speedmaster Professional Sapphire Sandwich is a high-end watch with an updated adjustable clasp, offering convenient sizing without tools. The watch features a sapphire crystal and is available in the 2025 model.

  • Condition: Near mint
  • Year: 2025
  • Crystal material: Sapphire
  • Bracelet type: Omega
Posted at
Mar 2, 2026, 8:59 AM
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[WTS] 2026 Omega Speedmaster White Dial 310.32.42.50.04.001

2026 Omega Speedmaster White Dial 310.32.42.50.04.001

Omega - 310.32.42.50.04.001
a 2026 Omega Speedmaster White Dial is being sold in this listing, but no details are provided about its condition or features.

Posted at
Mar 2, 2026, 12:53 AM
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[WTS] Omega Speedmaster “Silver Snoopy Award” 50th anniversary ref 310.32.42.50.02.001

Omega Speedmaster “Silver Snoopy Award” 50th anniversary ref 310.32.42.50.02.001

Omega - 310.32.42.50.02.001 · $15,850
The Omega Speedmaster 'Silver Snoopy Award' 50th anniversary watch features a white and blue combo that is highly desirable.

  • Condition: Unworn
  • Set type: Complete set
Posted at
Mar 1, 2026, 8:34 PM
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[WTS] Omega Speedmaster Moonwatch White Dial 2025 Full Set $8,000 [USA]

Omega Speedmaster Moonwatch White Dial 2025 Full Set $8,000 [USA]

Omega - 310.30.42.50.04.001 · $8,000
A white Omega Speedmaster Moonwatch from the iconic company that sent the first watch to the moon, with minor marks and a full set.

  • Condition: very lightly worn with minor marks
  • Year: 2025
  • Dimensions: 42mm diameter
  • Bracelet size: 7.25"
Posted at
Mar 1, 2026, 4:05 PM
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[WTS] 2025 Omega Speedmaster Professional White 310.30.42.50.04.001 $7,490

2025 Omega Speedmaster Professional White 310.30.42.50.04.001 $7,490

Omega - 310.30.42.50.04.001 · $7,490
The Omega Speedmaster Moonwatch Professional features a glossy white lacquered dial, black markers, and red 'Speedmaster' text, with an updated 3861 movement and a sapphire crystal.

  • Condition: Excellent condition
  • Case Size: 42mm
  • Case Thickness: 13.2mm
  • Lug Width: 20mm
Posted at
Mar 1, 2026, 3:35 PM
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[WTS] Omega Speedmaster 38 Co-Axial Chronograph 324.30.38.50.02.001 Full Set- $3650

Omega Speedmaster 38 Co-Axial Chronograph 324.30.38.50.02.001 Full Set- $3650

Omega - 324.30.38.50.02.001 · $3,650
This Omega Speedmaster 38 Co-Axial Chronograph features a silver dial and is in excellent condition, showing very minimal wear. The watch includes its original certificate of authenticity from Watchfinder.

  • Condition: excellent overall condition with very minimal wear
  • Case Material: stainless steel
  • Bracelet Type: stainless steel
  • Bracelet Condition: brand-new, unworn
Posted at
Mar 1, 2026, 11:03 AM
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[WTS] Omega 3510.21 Speedmaster Reduced Panda ‘Marui’ Japan LE (2,000pcs) — Fullset — $6,300 Shipped

Omega 3510.21 Speedmaster Reduced Panda ‘Marui’ Japan LE (2,000pcs) — Fullset — $6,300 Shipped

Omega - 3510.21 · $6,300
A compact Omega Speedmaster Reduced featuring a white dial and contrasting black sub-dials. The 39mm automatic chronograph is powered by Omega Cal. 3220.

  • Condition: Pre-owned with normal signs of wear consistent with age
  • Case size: 39mm diameter
  • Movement: Omega Cal. 3220
  • Bracelet type: Original Omega stainless steel bracelet
Posted at
Mar 1, 2026, 8:46 AM
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[WTS] OMEGA Speedmaster Moonwatch White Dial Steel Leather 310.32.42.50.04.002

OMEGA Speedmaster Moonwatch White Dial Steel Leather 310.32.42.50.04.002

OMEGA - 310.32.42.50.04.002 · $7,900
This OMEGA Speedmaster Moonwatch features a white dial with contrasting black subdials and a 42mm stainless steel case, paired with a black leather strap.

  • Condition: Excellent
  • Case size: 42mm
  • Material: stainless steel
  • Band material: leather
Posted at
Mar 1, 2026, 8:45 AM
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