Omega Speedmaster Speedmaster Professional Moonphase / Strap

Reference 3876.50.31

Omega Speedmaster Professional Moonphase / Strap

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

Current Listings

2026 Omega Speedmaster Moonwatch Professional 310.32.42.50.04.002 – Brand New / Partially Stickered

Omega - 310.32.42.50.04.002 · $8,000

A 2026 Omega Speedmaster Moonwatch Professional featuring a white dial, classic case, and black bezel, powered by the Master Chronometer Caliber 3861 manual-wind chronograph movement.

Condition: Brand new / partially stickered with small nick near lower right lug
Case size: 42mm
Movement: Omega Caliber 3861, Master Chronometer
Crystal: Sapphire

Posted at

Mar 13, 2026, 10:42 PM

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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 is a 44.25mm masterpiece crafted from black ceramic, commemorating the 50th anniversary of the Apollo 8 mission.

Condition: UNWORN
Case material: black ceramic
Diameter: 44.25mm
Movement: Calibre 1869

Posted at

Mar 13, 2026, 8:27 PM

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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

A faithful recreation of the reference 105.003, famously worn by astronaut Ed White during America's first spacewalk, featuring a stainless steel timepiece with a black ceramic bezel and column-wheel chronograph movement.

Condition: UNWORN
Movement: Calibre 321
Diameter: 39.7mm
Case material: stainless steel

Posted at

Mar 13, 2026, 8:17 PM

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Omega Speedmaster '57 Full Kit!

Omega - '57 · $5,000

This is a recently acquired Omega Speedmaster '57, still under warranty and coming with full kit. The case, crystal, and bezel are in excellent condition.

Condition: Preowned with desk diving on bracelet
Warranty: Topper Warranty AND Omega warranty
Payment methods: Zelle, PPFF, Venmo
Shipping location: US

Posted at

Mar 13, 2026, 6:04 PM

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Omega Speedmaster Professional “Reverse Panda” 42MM - Ref 310.30.42.50.01.004 (NEW / UNWORN 2026 COMPLETE SET)

Omega - 310.30.42.50.01.004 · $10,800

For sale is a 42MM Omega Speedmaster Professional ‘Reverse Panda’, in true new condition, with all original packaging and documentation.

Condition: new, unworn, unsized
Warranty date: 03/12/2026
Included items: outer sleeve, outer box, inner box, cards, manuals, AD shipping coffin, serialized hangtag, UPC sticker, microfiber, travel case

Posted at

Mar 13, 2026, 3:59 PM

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Omega Speedmaster Racing 40mm Blue Dial – Full Set – $2,950

Omega - 326.30.40.50.03.001 · $2,950

Up for sale is my Omega Speedmaster Racing with the blue dial and black textured sub-dials, featuring a 40mm automatic chronograph powered by the Omega Co-Axial Caliber 3330.

Condition: Very good pre-owned condition
Case size: 40mm diameter
Strap: Aftermarket strap and original Omega stainless steel bracelet included

Posted at

Mar 13, 2026, 3:44 PM

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Omega Speedmaster Racing 329.30.44.51.04.001 COMPLETE SET 2024

Omega - 329.30.44.51.04.001 · $6,250

This Omega Speedmaster Racing features a white dial and comes in its complete set, including double boxed packaging and all relevant documentation.

Condition: Excellent
Payment Methods Accepted: cryptocurrency, local meetups, other methods
Trades Allowed: yes, only for brands: Tudor, Cartier, Rolex, Omega, Breitling, AP
Location: southwest FL

Posted at

Mar 13, 2026, 2:18 PM

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Omega Speedmaster Reduced 3510.50 Excellent Condition + Serialized Hand Tag

Omega - 3510.50 · $2,650

This Omega Speedmaster Reduced is in excellent condition with hardly any signs of wear for its age, and it comes with a serialized hand tag.

Condition: Excellent
Serial number included: yes, with serialized hand tag
Payment methods accepted: cash, crypto (with fee), other payment methods
Trade options: Tudor, Cartier, Rolex, Omega, Breitling, AP

Posted at

Mar 13, 2026, 2:13 PM

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

Omega - 145.022-78 · $5,050

This Omega Speedmaster Professional Moonwatch is a well-preserved and reliable example of the Speedmaster Moonwatch from 1978. It features an original black tritium dial with even yellow patina across all hour markers, adding warmth and character to the watch.

Condition: Very good overall shape, all-original condition
Case diameter: 42mm
Year of production: 1978
Bracelet size: 7.6–7.7 inches (19.7 cm)

Posted at

Mar 13, 2026, 1:02 PM

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