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.
Buy Now on Jomashop
This is an affiliate link

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

2023 Omega Speedmaster 31030425001001 � Box + Papers + extra Nato

2023 Omega Speedmaster 31030425001001 � Box + Papers + extra Nato

Omega - 31030425001001 · $5,470
The Omega Speedmaster reference 31030425001001 is an iconic timepiece that balances heritage and sophistication. Its classic black dial exudes confidence and beauty, paired with a sleek stainless steel bracelet for versatility.

  • Condition: Attractive condition with light signs of wear, as expected from a watch worn a handful of times
  • Case Size: 42mm diameter
  • Movement Type: Original Omega Automatic movement
  • Bracelet Fit: 7.9 inch wrist
Posted at
Mar 3, 2025, 5:43 PM
Active
2020 Omega Speedmaster Ref: 522.30.42.30.03.001 Tokyo 2020 Olympics with B+P

2020 Omega Speedmaster Ref: 522.30.42.30.03.001 Tokyo 2020 Olympics with B+P

2020 Omega Speedmaster Ref: 522.30.42.30.03.001, a limited edition watch from the Tokyo 2020 Olympics collection.

  • Condition: Excellent
  • Case size: 42mm
  • Limited edition number: 16X/2020
Posted at
Mar 3, 2025, 5:35 PM
Active
1999 Omega Speedmaster Broad Arrow Ref: 3594.50 with Box and Papers

1999 Omega Speedmaster Broad Arrow Ref: 3594.50 with Box and Papers

Omega - 3594.50 · $3,850
This 1999 Omega Speedmaster Broad Arrow features a 42mm case with an excellent stainless steel bezel and black chronograph dial, along with Luminova stick markers and broad arrow hands.

  • Condition: Excellent
  • Case size: 42mm
  • Bracelet links: 15
  • End links: 840
Posted at
Mar 3, 2025, 5:33 PM
Active
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