Omega Speedmaster Speedmaster Professional Moonphase / Strap

Reference 3876.50.31

About this watch

The Omega Speedmaster Professional Moonphase is an exquisite blend of precision, technology, and style, boasting a storied history in horology. With its classic yet sporty design, this watch exudes sophistication, featuring a black dial highlighted by the stainless steel case. The stick and dot indexes provide excellent visibility, while the moonphase complication adds a touch of elegance to its sporty demeanor. At its heart lies the Omega caliber 1866, a handwound chronograph movement renowned for precision and reliability. With a power reserve of 45 hours, it's designed to withstand daily wear and tear, making it an excellent choice for both men and women. The watch's durability is further enhanced by its sapphire crystal, ensuring that the beauty of the dial remains unblemished over time. Water-resistant up to 50 meters, this watch is suitable for splashes and brief immersions in water. Whether you're a collector, space enthusiast, or simply looking for a reliable timepiece, the Speedmaster Professional Moonphase ticks all the boxes, offering a perfect blend of functionality, style, and history.
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MSRP: $5,900
Market Price: $5,287

Key Features

  • Omega Caliber 1866 Handwound Chronograph Movement
  • 42mm Stainless Steel Case with Tachymeter Bezel
  • Sapphire Crystal for Scratch-Resistant Durability

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonphase / Strap
Reference
3876.50.31
Movement
1866
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph
  • Moonphase
Case
Stainless Steel 42mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] “May the 4th Be With You” 2026 Card Omega Speedmaster Sapphire Complete Set *$7,200 + label*

“May the 4th Be With You” 2026 Card Omega Speedmaster Sapphire Complete Set *$7,200 + label*

A brand new Omega Speedmaster Sapphire Sandwich Complete Set with all cards included, travel case, and literature.

  • Condition: Brand new, unworn and unsized
  • Year: 5/4/2026
  • Contents: All cards included, travel case and Speedmaster literature
  • Payment methods: Zelle or Wire preferred, Credit Cards accepted +3.5%
Posted at
May 8, 2026, 11:23 AM
Active
[WTS] 2026 Omega Speedmaster White Full Set

2026 Omega Speedmaster White Full Set

No description provided in the listing

Posted at
May 8, 2026, 10:13 AM
Active
[WTS][US] Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm - 311.30.40.30.01.001 - Full Set

[US] Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm - 311.30.40.30.01.001 - Full Set

Omega - 311.30.40.30.01.001 · $15,550
Up for sale is an Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm, functions perfectly mechanically.

  • Condition: pristine condition with minor hairlines on clasp, case, and bracelet
  • Diameter: 39.7mm
Posted at
May 8, 2026, 8:05 AM
Active
[WTS] Omega Speedmaster Hesilate Ref. 310.32.42.50.01.001 Full Set + Original Receipt

Omega Speedmaster Hesilate Ref. 310.32.42.50.01.001 Full Set + Original Receipt

This Omega Speedmaster Moonwatch Professional features a Co-Axial Master Chronometer Caliber 3861 and is in excellent overall condition, with the notable exception of a very minor mark on the Hesalite crystal.

  • Condition: Excellent overall condition with minor mark on Hesalite crystal and light signs of normal wear on case
  • Movement: Co-Axial Master Chronometer Caliber 3861
  • Crystal type: Hesalite
  • Caseback type: Aftermarket exhibition caseback (original solid also included)
Posted at
May 8, 2026, 8:00 AM
Active
[WTS][US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set

[US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set

Up for sale is an Omega Speedmaster Moonwatch Professional - White Dial - Full Set Watch is in pristine condition and functions perfectly mechanically, without issue.

  • Condition: pristine condition with minor hairlines on clasp, case, and bracelet
  • Water Resistance: 30m
  • Box Contents: inner box, outer box, removable travel case, historical booklet, user manual, microfiber cloth, master chronometer card, warranty card
Posted at
May 8, 2026, 7:59 AM
Active
[WTS] Omega Speedmaster Professional (310.30.42.50.01.002)

Omega Speedmaster Professional (310.30.42.50.01.002)

This Omega Speedmaster Professional features a black dial on a stainless steel bracelet, with a sapphire crystal and manual caliber 3861 movement.

  • Condition: Excellent
  • Case size: 42mm diameter
  • Case material: Stainless Steel
  • Bracelet material: Stainless Steel
Posted at
May 8, 2026, 7:11 AM
Active
[WTS] Omega Speedmaster Snoopy New 4/2026, $15.2k!!

Omega Speedmaster Snoopy New 4/2026, $15.2k!!

Omega - 310.32.42.50.02.001 · $15,200
This Omega Speedmaster is a limited edition 'Silver Snoopy Award' 50th Anniversary model, featuring a silver dial with blue accents and a Snoopy medallion.

  • Condition: Brand New In Box (BNIB)
  • Case size: 42mm
  • Movement type: Manual Wind
  • Depth rating: 50m
Posted at
May 8, 2026, 12:50 AM
Active
[WTS] 1971 Omega Speedmaster Ref.145022-69 “ Straight Writing” $10,500 AUD / $7,800USD

1971 Omega Speedmaster Ref.145022-69 “ Straight Writing” $10,500 AUD / $7,800USD

Omega - 145022-69 · $7,800
A clean and honest early 1970s Omega Speedmaster Professional. Fully serviced by LWC in Perth in February 2026.

  • Condition: Honest vintage condition, running well
  • Case Material: Stainless steel
  • Case Size: 42mm diameter
  • Movement Type: Manual wind chronograph (cal. 861)
Posted at
May 7, 2026, 7:26 PM
Active
[WTS] Genuine Omega Leather Strap, Speedmaster

Genuine Omega Leather Strap, Speedmaster

Omega - Speedmaster · $375
Up for sale is a genuine leather Omega Speedmaster band with a stainless steel deployant clasp, characterized by its light and comfortable design.

  • Condition: Genuine leather strap with slight wear
  • Width: 20mm
  • Clasp material: stainless steel
  • Shipping options: US shipping via FedEx or UPS
Posted at
May 7, 2026, 5:52 PM
Active