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] Omega "Silver Snoopy" Speedmaster 2025

Omega "Silver Snoopy" Speedmaster 2025

Omega - 310.32.42.50.02.001 · $15,299
This Omega Speedmaster Silver Snoopy Award is a commemorative edition that pays tribute to Omega's crucial role in the safe return of Apollo 13, featuring a highly detailed caseback animation of Snoopy and a mission-inspired design language.

  • Condition: Brand new, unworn
  • Case size: 42mm diameter
  • Water resistance: 50m depth rating
Posted at
Mar 7, 2026, 12:44 PM
Active
[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! 🔥$10,000🔥

OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 🔥$10,000🔥

OMEGA - 311.92.44.30.01.001 · $10,000
The OMEGA Speedmaster 'Dark Side of the Moon' Apollo 8 commemorates the 50th anniversary of the Apollo 8 mission, featuring a black ceramic case and a skeletonized dial with laser-ablated lunar surface details.

  • Condition: UNWORN
  • Case material: black ceramic
  • Case diameter: 44.25mm
  • Movement: Calibre 1869
Posted at
Mar 6, 2026, 8:25 PM
Active
[WTS] OMEGA Speedmaster Calibre 321 "Ed White" Ref. 311.30.40.30.01.001 - ULTIMATE SET! 🔥$16,000🔥

OMEGA Speedmaster Calibre 321 "Ed White" Ref. 311.30.40.30.01.001 - ULTIMATE SET! 🔥$16,000🔥

OMEGA - 311.30.40.30.01.001 · $16,000
The OMEGA Speedmaster Calibre 321 Ref. 311.30.40.30.01.001 is a faithful recreation of the reference 105.003, famously worn by astronaut Ed White during America's first spacewalk.

  • Condition: UNWORN
  • Movement: Calibre 321 column-wheel chronograph movement
  • Case size: 39.7mm diameter
  • Bezel material: black ceramic
Posted at
Mar 6, 2026, 8:15 PM
Active
[wts] 2025 UNWORN OMEGA SPEEDMASTER WHITE DIAL
310.30.42.50.04.001 $7799

2025 UNWORN OMEGA SPEEDMASTER WHITE DIAL 310.30.42.50.04.001 $7799

2025 Omega Speedmaster with a white dial for sale.

  • Condition: Unworn
  • Dial color: white
Posted at
Mar 6, 2026, 7:32 PM
Active
[WTS] Omega Speedmaster "The One That Actually Fits" – Serviced, & Sharp  ref 3510.50

Omega Speedmaster "The One That Actually Fits" – Serviced, & Sharp ref 3510.50

Omega - 3510.50 · $2,200
This Omega Speedmaster 'Reduced' model features a Triple Date layout and is known for its vintage charm, clean dial, and sharp lugs.

  • Condition: Excellent / Serviced 2025
  • Movement Type: Automatic
  • Bracelet: Original steel with additional links
  • Shipping Location: New York City
Posted at
Mar 6, 2026, 5:51 PM
Active
[WTS] OMEGA Speedmaster Racing 329.30.44.51.04.001 2022 Full Set

OMEGA Speedmaster Racing 329.30.44.51.04.001 2022 Full Set

This Omega Speedmaster Racing is a complete set with inner and outer boxes, manual, COSC card, warranty card, and hang tag.

  • Condition: Excellent
  • Warranty Expiration: May 2027
  • Size: for 7.5” wrist
Posted at
Mar 6, 2026, 4:31 PM
Active
[WTS] Omega Speedmaster 3511.50 Reverse Panda JAPAN EDITION

Omega Speedmaster 3511.50 Reverse Panda JAPAN EDITION

Omega - 3511.50 · $2,150
For sale is an Omega Speedmaster Reduced 3511.50, running great and all functions work properly.

  • Condition: great condition with light signs of wear
Posted at
Mar 6, 2026, 4:01 PM
Active
[WTS] OMEGA SPEEDMASTER 145.022-69 PREMOON

OMEGA SPEEDMASTER 145.022-69 PREMOON

OMEGA - 145.022-69 · $6,000
A charming vintage chronograph with a great dial and original DO90 bezel, sold with an original Omega bracelet.

  • Condition: Pre-owned, with signs of wear
  • Bracelet type: Original 1039
  • Clasp type: Omega clasp
Posted at
Mar 6, 2026, 3:05 PM
Active
[WTS] Omega Speedmaster Professional Moonwatch Full Steel Yellow Patina 1978 (Serviced)

Omega Speedmaster Professional Moonwatch Full Steel Yellow Patina 1978 (Serviced)

Omega - 145.022-78 · $5,050
This Omega Speedmaster Professional Moonwatch features a black tritium dial with even yellow patina and is presented in its original state with period-correct details.

  • Condition: Very good overall shape, original condition with some polishing on the case
  • Year: 1978
  • Size: 42mm diameter
Posted at
Mar 6, 2026, 10:46 AM
Active