Omega Speedmaster Speedmaster Professional Moonwatch 3861 Sedna Gold / Black / Alligator
Reference 310.63.42.50.01.001
About this watch
The Omega Speedmaster Professional Moonwatch 3861 Sedna Gold / Black / Alligator is a masterpiece of luxury watchmaking, blending history, craftsmanship, and modern technology. Its striking black sunburst dial and Sedna Gold case exude sophistication, while its chronograph function and co-axial escapement ensure precision and reliability. With a water resistance of 50 meters and a power reserve of 50 hours, this watch is built for performance and durability. Whether you're a seasoned collector or a first-time buyer, the Speedmaster Professional Moonwatch is sure to impress with its stunning design, exceptional movement, and practical features.
Key Features
- Omega caliber 3861 movement
- Sedna Gold case material
- Master Chronometer certification by METAS
- Chronograph function
- Co-axial escapement
- Plexi glass crystal
- 50-meter water resistance
Specifications
- Brand
- Omega
- Family
- Speedmaster
- Model
- Speedmaster Professional Moonwatch 3861 Sedna Gold / Black / Alligator
- Reference
- 310.63.42.50.01.001
- Movement
- 3861
- Movement Features
-
- Small Seconds, Hours, Minutes
- Chronograph
- Chronometer
- Case
- Sedna Gold 42mm
- Dial Color
- Black
- Crystal
- Plexi
- Water Resistance
- 50
Current Listings
![[WTS] Omega Speedmaster Professional Sapphire 1863 311.30.42.30.01.006 - $4,150](https://external-preview.redd.it/kEGoBmFW8GKki38hBVu145eaMQs2xAUfPOElgXnolr0.jpeg?auto=webp&s=def0815820d016ff6ede80248cee60b42fcd51b4)
Omega Speedmaster Professional Sapphire 1863 311.30.42.30.01.006 - $4,150
This Omega Speedmaster Moonwatch Professional is a 42mm watch that functions perfectly mechanically and comes in amazing condition.
- Condition: Amazing condition
- Bracelet size fits wrist: 6.5 inches
Omega Speedmaster ’57 331.10.42.51.01.002
This Omega Speedmaster '57 Co-Axial Chronograph features a 41.5mm stainless steel case, black dial with twin-register chronograph layout, and is powered by Omega's in-house Co-Axial calibre 9300 movement.
- Condition: Excellent pre-owned condition
- Case size: 41.5mm diameter
- Movement: Co-Axial calibre 9300 with 60-hour power reserve
- Bracelet material: stainless steel
![[WTS] Omega Speedmaster Professional 3590.50 - $3495 Shipped ✈️](https://external-preview.redd.it/YDKPbCLnq2CD-04Z9ajIvdGZJ1ZwaLlPCX5fKNuqbtg.jpeg?auto=webp&s=f343a974e96c0cfbf3f35217282a2d6d432d65e7)
Omega Speedmaster Professional 3590.50 - $3495 Shipped ✈️
This Omega Speedmaster Professional features a Tritium dial and Cal 861 movement, with all functions working well.
- Condition: Excellent (Watch runs well, all functions work)
- Size: 7.5 inch wrist size
- Location: Conus (USA)
![[WTS] Omega Speedmaster Professional Moonwatch ( 310.30.42.50.01.001 ) - Full Kit - Reduced](https://external-preview.redd.it/4Qhrnoh_aF2m2H78zKWw2DzYOwEnTK-L9f3QMUs_Uy8.jpeg?auto=webp&s=7dd0ad6f799d38afd673f22607a47d9dffd16ece)
Omega Speedmaster Professional Moonwatch ( 310.30.42.50.01.001 ) - Full Kit - Reduced
This Omega Speedmaster Professional is a 42mm watch with a full kit. It has been used but is in great condition, with some small scratches around the watch and on the bracelet.
- Condition: Great condition, some small scratches
- Bracelet condition: Little to no scratches
- Payment methods: Bank Wire, paypal f&f
![[WTS] Omega Speedmaster Reduced 3511.12 Yellow JAPAN 🇯🇵 EXCLUSIVE](https://preview.redd.it/qejmeacx18ze1.jpeg?auto=webp&s=e40ff5bdc522a5ed204a2d7c10a92ca153cde7c7)
Omega Speedmaster Reduced 3511.12 Yellow JAPAN 🇯🇵 EXCLUSIVE
Additional Details: Omega Speedmaster Reduced, watch comes with box and booklet, 7" bracelet
- Bracelet length: 7 inch
- Box and papers included: yes
![[WTS] Omega Speedmaster Day Date 3520.50](https://preview.redd.it/jr1hsogi08ze1.jpeg?auto=webp&s=3ea24e879e0a06150f52a366a212bdeb144266f7)
Omega Speedmaster Day Date 3520.50
This Omega Speedmaster Day Date is a Triple Date model with an AM strap. It keeps accurate time but requires a new mainspring due to a weak power reserve.
- Condition: as-is, needs new mainspring and repair of top pusher
- Case Size: 40mm diameter
- Material: AM strap

Omega Speedmaster Moonwatch Sapphire - 3861 - 310.30.42.50.01.002 (new / 2025)
A brand new Omega Speedmaster Moonwatch Professional Sapphire with Adjustable Clasp, featuring a 42mm stainless steel case and 3861 Omega Master Chronometer Movement.
- Condition: Brand new
- Case size: 42mm diameter
- Water resistance: not specified

Omega Speedmaster Moonwatch Hesalite - 3861 - 310.30.42.50.01.001 (new / 2025)
This Omega Speedmaster Moonwatch Professional features a stainless steel case and a Master Chronometer movement, with a hesalite crystal. It comes complete with all boxes, papers, booklets, hang tag, and a 2025 Omega Warranty Card.
- Condition: Brand New
- Case size: 42mm
- Movement type: Master Chronometer
Omega Speedmaster Reduced White Dial Automatic 3510.2000
A white dial Omega Speedmaster Reduced, a chronograph with a mechanical automatic movement, housed in a stainless steel case.
- Condition: 90%
- Case Size: 38mm diameter
- Movement Type: Mechanical Automatic