Omega Speedmaster Speedmaster Professional Moonwatch 3861 Sedna Gold - Ruby / Black - Ruby / Bracelet
Reference 310.55.42.50.51.001
About this watch
The Omega Speedmaster Professional Moonwatch 3861 Sedna Gold is a stunning blend of luxury and functionality, with its Sedna gold construction and intricate chronograph features. The watch's sheer elegance is undeniable, with a black sunburst finish contrasting beautifully with gem-set indexes and ruby accents. Certified as a Master Chronometer by METAS, the Omega caliber 3861 movement is an engineering marvel, resistant to magnetic fields up to 15,000 gauss. With small seconds, hours, and minutes hands, the chronograph functionality offers precision timing. The watch's durability is also noteworthy, with sapphire glass adding scratch resistance. The Sedna gold bracelet ensures a secure fit, while its adjustability makes it comfortable for wearers of all wrist sizes. This timepiece is not just a luxury item but a conversation starter, status symbol, and piece of horological history.
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Key Features
- Omega caliber 3861 movement with Co-Axial escapement and silicon balance spring
- Sedna gold construction with gem-set indexes and ruby accents
- 50m water resistance with sapphire glass scratch resistance
- Chronograph functionality with small seconds, hours, and minutes hands
- Adjustable Sedna gold bracelet for secure fit on all wrist sizes
Specifications
- Brand
- Omega
- Family
- Speedmaster
- Model
- Speedmaster Professional Moonwatch 3861 Sedna Gold - Ruby / Black - Ruby / Bracelet
- Reference
- 310.55.42.50.51.001
- Movement
- 3861
- Movement Features
-
- Small Seconds, Hours, Minutes
- Chronograph
- Chronometer
- Case
- Sedna Gold 42mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 50
Current Listings
![[WTS][US] Omega Speedmaster Silver Snoopy - 50th Anniversary - 310.32.42.50.02.001 - Full Set + Bracelet](https://preview.redd.it/6q89ecsxurxe1.jpg?width=640&crop=smart&auto=webp&s=9cc4ae8d2f7b8abdbb0bf885df7cd5e65ca18e0d)
[US] Omega Speedmaster Silver Snoopy - 50th Anniversary - 310.32.42.50.02.001 - Full Set + Bracelet
This Omega Speedmaster Silver Snoopy - 50th Anniversary watch is a full set, including the watch, canvas strap, bracelet, box, manuals, and accessories. It functions perfectly mechanically.
- Condition: Fantastic condition with minor hairlines
- Case Diameter: 42mm
- Water Resistance: 30m
![[WTS] Omega Speedmaster Day Date 40mm 323.30.40.40.06.001 Full set $2850](https://preview.redd.it/ih854va7aoxe1.jpg?width=640&crop=smart&auto=webp&s=f19d80e682f88ffc95c885016143b8c54adc6f85)
Omega Speedmaster Day Date 40mm 323.30.40.40.06.001 Full set $2850
This Omega Speedmaster Day Date features a 40mm case and is in good condition with some minor wear. The watch comes with its full set.
- Condition: Good condition overall with light sign of wear
- Payment Methods: Zelle/Wire

1991 Omega Speedmaster Ref: 3590.50 with Accessories
A 1991 Omega Speedmaster Ref: 3590.50 with a 42mm case, excellent condition black bezel, and tritium dial with creamy yellow patina.
- Condition: Very nice with some wear from use
- Serial number: 48,26X,XXX
- Bracelet size: 20 links (+1 spare) and 633 end links
- Bracelet type: 1171/1 Omega bracelet

1991 Omega Speedmaster Ref: 3590.59 Apollo XI 20th Anniversary with Box and Papers
This is a 1991 Omega Speedmaster Ref 3590.59 Apollo XI 20th Anniversary, a limited edition made for the US market. The watch features a 42mm case with some wear from use and a ding on the side of the 10 o'clock lug.
- Condition: Very good
- Case size: 42mm
- Bracelet type: stainless steel 1479 Omega bracelet
- Links: 23 links and 812 end links

1992 Omega Speedmaster Ref: 3590.50
A 1992 Omega Speedmaster Ref: 3590.50 in excellent condition, featuring a 42mm case, black bezel, tritium dial, and Omega bracelet.
- Condition: Excellent with some light wear and corrosion
- Case Size: 42mm diameter
- Bracelet Links: 22

1999 Omega Speedmaster Broad Arrow Ref: 3594.50 with Box and Papers
This is a 1999 Omega Speedmaster Broad Arrow Ref: 3594.50, a chronograph watch with a 42mm case and stainless steel bezel, featuring a black dial with Luminova stick markers and broad arrow hands.
- Condition: Excellent
- Case size: 42mm
- Bracelet links: 15
- Bracelet end links: 840
![[WTS] Omega Speedmaster FOIS Moonwatch, Box+ Papers](https://preview.redd.it/6z0ery8zqnxe1.jpg?width=640&crop=smart&auto=webp&s=53fed7ac1ae479e1b92b49dceba83ccd48594567)
Omega Speedmaster FOIS Moonwatch, Box+ Papers
This Omega Speedmaster FOIS Moonwatch features a 39.7'' case diameter, Hesalite-like form, scratch-resistant sapphire crystal, and blue/gray dial.
- Condition: Great Preowned condition
- Case diameter: 39.7 inches
- Crystal material: scratch-resistant sapphire with anti-reflective treatment inside
Omega Speedmaster Tokyo 2020 Slate Green Sedna Gold
This Omega Speedmaster Tokyo 2020 Edition features a slate dial and green bezel, crafted from Sedna gold. Limited to 2020 pieces, this watch is part of a special Olympic box set.
- Condition: Pre-owned with minor marks
- Limited edition: 2020 pieces
- Year introduced: 2021
![[WTS] Omega Speedmaster Professional Moonwatch Full Steel Tritium Dial Blue Insert 1970’s (Unpolished)](https://external-preview.redd.it/QcGzwiJ21_i5muayXHydYYFR-_StiWLDkKJjL3uKCbA.jpg?auto=webp&s=6d50aaeaad052b8897e758d786736a5d5c4742cb)
Omega Speedmaster Professional Moonwatch Full Steel Tritium Dial Blue Insert 1970’s (Unpolished)
A remarkable example of the iconic Omega Speedmaster Moonwatch, preserved in its original condition with a known provenance. The black tritium dial and hands display a rich patina across the indices, paired with an original bezel insert that has developed a striking blue hue.
- Condition: Unpolished, original condition with patina
- Size: 42mm diameter
- Year: 1970s
- Bracelet stretch: minimal