Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Kanjar Oman

Reference 310.30.42.50.01.003

About this watch

The Omega Speedmaster Professional Moonwatch 3861 is a piece of history wrapped around your wrist, with its rich lineage and modern upgrades capturing the hearts of watch enthusiasts and collectors alike. This manual-winding chronograph movement features a co-axial escapement and silicon balance spring, making it resistant to magnetic fields up to 15,000 gauss. The plexi glass provides a warm, vintage feel that many collectors adore, while the stainless steel case measures 42mm in diameter and has a water resistance of 50 meters. This timepiece is perfect for everyday wear, suitable for both formal and casual occasions. With its stunning design, robust movement, and versatility, it's a celebration of heritage, precision, and style.
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Key Features

  • Omega Caliber 3861 Movement
  • Plexi Glass with Vintage Feel
  • 42mm Stainless Steel Case
  • 50m Water Resistance
  • Manual-Winding Chronograph Function
  • Co-Axial Escapement and Silicon Balance Spring

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 3861 Stainless Steel / Black / Plexi / Kanjar Oman
Reference
310.30.42.50.01.003
Movement
3861
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph
  • Chronometer
Case
Stainless Steel 42mm
Dial Color
Black
Crystal
Plexi
Water Resistance
50

Current Listings

[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
[WTS] Omega 50th Anniversary Silver Snoopy Speedmaster

Omega 50th Anniversary Silver Snoopy Speedmaster

Omega - 310.32.42.50.02.001 · $15,000
This Omega Speedmaster features a silver dial, blue ceramic bezel, and animated NASA Snoopy caseback complication.

  • Condition: Excellent pre-owned condition
  • Case material: Stainless steel
  • Bracelet: Omega speedmaster metal bracelet
  • Included items: factory white delivery box, blue speedmaster presentation box, blue outer box, Omega speedmaster travel case, original hang tags, original price stickers, warranty card, Master Chronometer card, pictogram card, manuals
Posted at
Feb 28, 2026, 8:39 PM
Active
[WTS] Omega Speedmaster 38 | Black Dial Chronograph | 38mm $4500

Omega Speedmaster 38 | Black Dial Chronograph | 38mm $4500

The Omega Speedmaster 38 features the iconic design in a versatile 38mm case, powered by the reliable Omega Caliber 3330 chronograph movement.

  • Condition: Very good
  • Case size: 38mm
  • Water resistance: 100m depth rating
Posted at
Feb 28, 2026, 4:19 PM
Active
[WTS] Omega Speedmaster. 39mm. Special Dial.

Omega Speedmaster. 39mm. Special Dial.

Omega - Speedmaster · $2,250
This Omega Speedmaster is an automatic watch with a special dial and 39mm case size.

  • Diameter: 39mm
  • Movement: Automatic
Posted at
Feb 28, 2026, 11:13 AM
Active
[WTS] - Omega Speedmaster Professional 1861 Bracelet

- Omega Speedmaster Professional 1861 Bracelet

This is a stainless steel bracelet for the Omega Speedmaster Professional 1861 watch, sold in pristine condition with all links and screws included.

  • Condition: Pristine
  • Bracelet material: stainless steel
Posted at
Feb 28, 2026, 10:09 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