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 Speedmaster Professional Moonwatch Sapphire Sandwich - Spiralwinder Ceramic Bezel Installed (+$260), OEM Bezel Included - Full Kit - 2025 Card - Quick Adjust Clasp - $6175 shipped CONUS](https://preview.redd.it/oov4ja3g3nug1.jpg?width=640&crop=smart&auto=webp&s=5cc5eade8ad776c13f67a09079b3c91c059e4c38)
OMEGA Speedmaster Professional Moonwatch Sapphire Sandwich - Spiralwinder Ceramic Bezel Installed (+$260), OEM Bezel Included - Full Kit - 2025 Card - Quick Adjust Clasp - $6175 shipped CONUS
Up for sale is my OMEGA Speedmaster sapphire sandwich, a daily wear watch from an authorized dealer in 2025. The watch has been maintained and passes a 5 bar pressure test. It is priced accordingly due to its cosmetic condition.
- Condition: Pre-owned, daily wear with scratches and desk dive marks
- Year: 2025
- Ownership: Second owner
- Authentication: [object Object]
![[WTS] Omega Speedmaster 38 Co-Axial Chronograph 324.30.38.50.02.001](https://preview.redd.it/fe2gbax1xmug1.jpg?width=640&crop=smart&auto=webp&s=056ae413c96ce9cc2093e7c53a6087faa2fd6ba4)
Omega Speedmaster 38 Co-Axial Chronograph 324.30.38.50.02.001
This Omega Speedmaster 38 Co-Axial Chronograph features a silver dial and is in excellent overall condition with very minimal wear.
- Condition: Excellent
- Bracelet Condition: Brand-new, unworn
- Included Items: Omega inner box,Omega outer box,Instruction manual,Pictograms card,Watchfinder certificate of authenticity
![[WTS] Omega Speedmaster Professional (310.30.42.50.04.001)](https://preview.redd.it/e20arpr9klug1.jpg?width=640&crop=smart&auto=webp&s=1638363b70e08e81bd27acbfcb6a7ebb6d1ddc73)
Omega Speedmaster Professional (310.30.42.50.04.001)
This Omega Speedmaster Professional is the newest reference featuring a white dial on a steel bracelet, in excellent condition with almost no signs of wear.
- Condition: Excellent
- Case Size: 42mm diameter
- Case Material: Stainless Steel
- Bracelet Material: Stainless Steel
![[WTS] True Collectors Set! Omega Speedmaster Day-Date "Reduced" | Black Dial Ref. 3520.50 | 39mm | Stainless Steel | Multiple Straps](https://preview.redd.it/tspj3u7ujkug1.jpg?width=640&crop=smart&auto=webp&s=660be3ddf49c17bfa0d8019fde7cee893063e0c9)
True Collectors Set! Omega Speedmaster Day-Date "Reduced" | Black Dial Ref. 3520.50 | 39mm | Stainless Steel | Multiple Straps
The Omega Speedmaster Day-Date features a deep black dial and a sophisticated Triple Calendar complication in a 39mm stainless steel case.
- Condition: Excellent 9/10 Condition
- Case size: 39mm
- Movement type: Triple Calendar complication
- Bracelets: Omega stainless steel bracelet, two aftermarket bracelets (FOIS and leather)
![[WTS] OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 馃敟$10,000馃敟](https://preview.redd.it/up27z6r5qgug1.jpg?width=640&crop=smart&auto=webp&s=a6b7ae4a5c5c7beec9f34629f9448bb095027966)
OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 馃敟$10,000馃敟
The OMEGA Speedmaster 'Dark Side of the Moon' Apollo 8 Ref. 311.92.44.30.01.001 commemorates the 50th anniversary of the Apollo 8 mission, a 44.25mm masterpiece crafted from black ceramic with unparalleled scratch resistance and a modern aesthetic.
- Condition: UNWORN
- Case material: black ceramic
- Diameter: 44.25mm
- Movement: Calibre 1869
![[WTS] $1800 Omega Speedmaster](https://preview.redd.it/8oxh4zrncgug1.jpg?width=640&crop=smart&auto=webp&s=de239722873aa98d81766c7d9685ef5bbcc30fb5)
$1800 Omega Speedmaster
A watch only listing for an Omega Speedmaster.
![[WTS] 2025 OMEGA Speedmaster Calibre 321 "Ed White" - Full Set - Very Excellent](https://preview.redd.it/vck6ssqeofug1.jpg?width=640&crop=smart&auto=webp&s=410096edf26b8e600bd4369a5e049037a4e0aaea)
2025 OMEGA Speedmaster Calibre 321 "Ed White" - Full Set - Very Excellent
The Omega Speedmaster Calibre 321 'Ed White' is a highly iconic collector's piece, named after astronaut Ed White, featuring the masterfully crafted 321 Omega movement.
- Condition: Very Excellent pre-owned condition
- Year: 2025
- Case size: 39.7mm diameter
- Case material: Stainless steel
![[WTS] Omega Speedmaster Reduced 3510.50 Omega Buckle](https://preview.redd.it/uz5qg2m9ieug1.jpg?width=640&crop=smart&auto=webp&s=617b25226aeeea41e3848880848872b72022c78e)
Omega Speedmaster Reduced 3510.50 Omega Buckle
This Omega Speedmaster Reduced is a well-maintained timepiece with a nice patina on the dial, original Omega buckle, and hardly any wear on the crystal and case.
- Condition: great condition, some wear on strap and clasp
- Buckle type: Omega buckle
- Payment methods accepted: crypto, cash, bank transfer etc. excluding PayPal
![[WTS] Omega Speedmaster Racing 326.30.40.50.03.001](https://preview.redd.it/lov39n3lheug1.jpg?width=640&crop=smart&auto=webp&s=525c0c775f0eb952d03eed4b22beb9a1fa357430)
Omega Speedmaster Racing 326.30.40.50.03.001
For sale is an Omega Speedmaster Racing, a watch in great condition running great and comes as watch only.
- Condition: great condition with some light wear
- Payment Methods Accepted: crypto and other payment methods (with small fee)
- Local Meet Available: yes
- Trade Eligible Brands: Tudor, Cartier, Rolex, Omega, Breitling, AP