Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink

Reference 310.20.42.50.99.001

About this watch

The Omega Speedmaster Professional Moonwatch 310.20.42.50.99.001 is a stunning blend of tradition and innovation, featuring a unique Sedna Gold and pink finish. Its 42mm stainless steel case and Sedna Gold accents command attention, while the remarkable Omega caliber 3861 movement boasts a co-axial escapement, reducing friction for enhanced accuracy and longevity. Certified by METAS as a Master Chronometer, this watch can resist magnetic fields reaching an impressive 15,000 gauss. The sunburst pink finish adds sophistication, making it perfect for both casual and formal settings.
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Key Features

  • Omega caliber 3861 movement
  • 42mm stainless steel case
  • Sedna Gold accents
  • Co-axial escapement
  • Master Chronometer certified by METAS
  • 50m water resistance
  • Chronograph function

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink
Reference
310.20.42.50.99.001
Movement
3861
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph
  • Chronometer
Case
42mm
Dial Color
Pink
Crystal
Sapphire
Water Resistance
50

Current Listings

[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

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
Active
[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
Active
[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

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
Active
[WTS] Omega Speedmaster Reduced 3510.50 – Black Dial – Automatic – On Bracelet – $2,850 Shipped

Omega Speedmaster Reduced 3510.50 – Black Dial – Automatic – On Bracelet – $2,850 Shipped

Omega - 3510.50 · $2,850
a Omega Speedmaster Reduced on a bracelet with black dial and automatic movement

  • Case size: 40mm
Posted at
Mar 1, 2026, 4:32 AM
Active
[WTS] Omega 3510.21 Speedmaster Panda ‘Marui’ Japan LE (2,000pcs) – Full Set – $6,300 Shipped

Omega 3510.21 Speedmaster Panda ‘Marui’ Japan LE (2,000pcs) – Full Set – $6,300 Shipped

Omega - 3510.21 · $6,300
This Omega Speedmaster Automatic 'Marui' Panda is a Japan-market limited edition featuring a highly collectible white dial with black sub-dials configuration. It has an Omega Cal. 3220 movement, recently serviced, and comes in its original box and papers.

  • Condition: Clean white dial with strong contrast sub-dials, case remains sharp with honest wear, bezel in good condition with light signs of use, box shows aging consistent with period
  • Case Size: 39mm x 44mm x 12mm
  • Lug Width: 18mm
  • Movement: Omega Cal. 3220 (based on ETA 2890-A2 with Dubois-Dépraz module)
Posted at
Mar 1, 2026, 3:50 AM
Active
[WTS] Omega Speedmaster 3513.33 Automatic Date 40

Omega Speedmaster 3513.33 Automatic Date 40

Omega - 3513.33 · $2,700
A beautiful Omega Speedmaster automatic watch, featuring a 40mm case and 100m water resistance.

  • Case Diameter: 40mm
  • Water Resistance: 100m
  • Lug Width: 18mm
Posted at
Mar 1, 2026, 1:33 AM
Active

2022 Omega Speedmaster Moonwatch Sapphire 42mm 310.30.42.50.01.002 Mint Complete

This 2022 Omega Speedmaster Moonwatch Sapphire 42mm is a first watch worn on the moon, featuring photos and a video on the seller's website.

  • Condition: Minty fresh
  • Case size: 42mm
  • Year: 2022
  • Contents: watch,inner & outer boxes,warranty card,pictogram,master chronometer,instruction booklet,black travel case,hang tag,cleaning cloth,Moonwatch Booklet
Posted at
Apr 7, 2025, 2:59 PM
Active
Omega Speedmaster Chronograph  - Blue - Stainless Steel - 38mm - Mint

Omega Speedmaster Chronograph - Blue - Stainless Steel - 38mm - Mint

This Omega Speedmaster Chronograph features a 38mm stainless steel case, blue dial, and automatic movement.

  • Condition: Pre-Owned - Mint
  • Case size: 38mm diameter
  • Bracelet type: Stainless Steel
  • Dial color: Blue
Posted at
Apr 5, 2025, 6:13 PM
Active
Omega Speedmaster 321 Ed White

Omega Speedmaster 321 Ed White

This Omega Speedmaster 321 Ed White is an original purchase from a US OB in 2023, worn sparingly since.

  • Condition: Good condition with minor scuffs
  • Warranty: includes warranty cards
  • Links: all links included
Posted at
Apr 4, 2025, 6:34 PM
Active