Omega Speedmaster Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink

Reference 310.20.42.50.99.001

Omega Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink

About this watch

The Omega Speedmaster Professional Moonwatch 310.20.42.50.99.001 is a stunning blend of tradition and innovation, featuring a unique Sedna Gold and pink finish. Its 42mm stainless steel case and Sedna Gold accents command attention, while the remarkable Omega caliber 3861 movement boasts a co-axial escapement, reducing friction for enhanced accuracy and longevity. Certified by METAS as a Master Chronometer, this watch can resist magnetic fields reaching an impressive 15,000 gauss. The sunburst pink finish adds sophistication, making it perfect for both casual and formal settings.

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Key Features

Omega caliber 3861 movement
42mm stainless steel case
Sedna Gold accents
Co-axial escapement
Master Chronometer certified by METAS
50m water resistance
Chronograph function

Specifications

Brand

Omega

Family

Speedmaster

Model

Speedmaster Professional Moonwatch 3861 Stainless Steel - Sedna Gold / Pink

Reference

310.20.42.50.99.001

Movement

3861

Movement Features

Small Seconds, Hours, Minutes
Chronograph
Chronometer

Case

42mm

Dial Color

Pink

Crystal

Sapphire

Water Resistance

Current Listings

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Omega - 331.22.42.51.01.001 · $6,999

The Omega Speedmaster Co-Axial Chronograph is a luxurious everyday chronograph with serious pedigree, blending legendary heritage with refined execution.

Condition: Mint, minimal signs of wear
Case Size: 41.5 mm diameter
Thickness: 16.17 mm
Lug To Lug: 50 mm

Posted at

Mar 8, 2026, 10:36 PM

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Omega Speedmaster Professional 3570.50.00 (Hesalite) 1861 cal

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Selling an Omega Speedmaster Professional 3570.50.00 (Hesalite) 1861 cal watch in good condition, with a full service at Omega AD in 2022 and original papers from the first owner.

Condition: good condition
Year of purchase: 2014
Bracelet condition: has scratches on clasp area due to typing on a laptop
Additional accessories: extra NATO strap

Posted at

Mar 8, 2026, 9:34 PM

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Omega Speedmaster METAS 3861 Sapphire Sandwich - Mint - 2023 (under Omega warranty until 2028) - Latest Version With Quick Adjust Clasp - Full Kit

Omega - 3861 · $6,900

This Omega Speedmaster Moonwatch is a full kit dated May 2023, under warranty until May 2028. It has some minor scratches on the clasp but runs flawlessly and is in great condition.

Condition: Mint with desk dive scratches on the clasp
Year of manufacture: 2023
Warranty expiration year: 2028
Case condition: Mint

Posted at

Mar 8, 2026, 8:54 PM

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View listing on r/WatchExchange

Omega Speedmaster Mark II. 327.10.43.50.01.001.

Omega - 327.10.43.50.01.001 · $3,395

This Omega Speedmaster Mark II is a large watch that fits comfortably on the wrist, with additional details and photos available upon request.

Condition: Very good condition
Size: 41mm diameter
Location: New Jersey, USA

Posted at

Mar 8, 2026, 3:17 PM

Active

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Omega Speedmaster. Moonwatch + Moonphase. Sapphire Sandwich.

Omega - Speedmaster Moonwatch Sapphire Sandwich · $4,950

The watch is an Omega Speedmaster, also known as a Moonwatch, featuring a sapphire sandwich case.

Condition: Very clean
Location: New Jersey, USA

Posted at

Mar 8, 2026, 3:14 PM

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Omega Speedmaster 3570.50-$4200

Omega - 3570.50 · $4,200

The Omega Speedmaster 3570.50 is a model that comes watch only with original band and Forstner band. It's suitable for everyday wear.

Condition: Good condition with some normal signs of wear
Band Count: 2
Seller Experience: Yes, several sales on AWWC, SBWC, Resco, and eBay

Posted at

Mar 8, 2026, 2:58 PM

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Omega Speedmaster 3861 Sapphire Sandwich - Minty - May 2023 Card (under Omega warranty until 2028) - Quick Adjust Bracelet - Full Kit

Omega - 3861 · $6,999

A 2023 Omega Speedmaster Moonwatch 3861 sapphire sandwich, in great condition with a full kit and under warranty until 2028. The watch is running accurately at 0 spd.

Condition: great condition with minor desk dive scratches on the clasp
Warranty expiration date: May 2028
Retail price: $9K

Posted at

Mar 8, 2026, 2:04 PM

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View listing on r/WatchExchange