Omega Speedmaster Speedmaster Professional Moonwatch

Reference 3870.50.31

About this watch

The Omega Speedmaster Professional Moonwatch (model 3870.50.31) is a masterpiece of watchmaking. This iconic timepiece has been to the moon and back, thanks to its association with the Apollo 11 mission in 1969. At its heart lies the Omega caliber 1861, a hand-wound movement that's both reliable and precise. With a frequency of 21,600 vibrations per hour and a power reserve of 48 hours, this watch is designed to keep you on time for your next adventure. The black dial is elegantly accented by stick and dot indexes, making it both readable and stylish. Its stainless steel case with a round shape and diameter of 42.00 mm exudes sophistication, while the tachymetric bezel adds a sporty edge. Whether you're in a boardroom or at a casual gathering, this watch makes a statement. The Speedmaster's versatility is unmatched, effortlessly transitioning from a dress watch to a casual piece. Pair it with a crisp suit or a relaxed T-shirt, and it fits right in. Its durability and accuracy have made it the perfect companion for astronauts, and its rich heritage is a testament to Omega's engineering prowess.

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MSRP: $4,400

Market Price: $4,139

Key Features

Omega caliber 1861 hand-wound movement
50-meter water resistance
42mm stainless steel case with black dial
Tachymetric bezel
Chronograph functionality with small seconds, hours, and minutes hands

Specifications

Brand

Omega

Family

Speedmaster

Model

Speedmaster Professional Moonwatch

Reference

3870.50.31

Movement

1861

Movement Features

Small Seconds, Hours, Minutes
Chronograph

Case

Stainless Steel 42mm

Dial Color

Black

Crystal

Plexi

Water Resistance

Current Listings

Omega Speedmaster Broad Arrow 3556.50.00 – Full Set – $2850 Shipped

Omega - 3556.50.00 · $2,850

The Omega Speedmaster Broad Arrow Olympic Edition is a beautifully finished 42mm automatic chronograph with classic Broad Arrow hands, a date window, and small seconds.

Condition: Excellent - freshly serviced
Case size: 42mm
Movement type: Automatic chronograph
Features: Date window, small seconds, chronograph

Posted at

Apr 29, 2025, 11:17 PM

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2019 Omega Speedmaster Grey Side of the Moon Meteorite - Full set Box and papers - Ref# 311.63.44.51.99.001

Omega - 311.63.44.51.99.001 · $9,498

This Omega Speedmaster Grey Side of the Moon Meteorite features a 44mm ceramic case and Sedna gold details, making it stand out among other speedies.

Condition: Very good condition, small nick on the case
Case diameter: 44mm
Water resistance: 30m

Posted at

Apr 29, 2025, 10:35 PM

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Omega Speedmaster 50th Anniversary Silver Snoopy Award 310.32.42.50.02.001

Omega - 310.32.42.50.02.001 · $14,000

This Omega Speedmaster commemorates the Apollo 13 mission and features a stunning design blending history and horology.

Condition: Excellent pre-owned
Case Size: 42mm diameter
Case Material: Stainless Steel
Strap: Blue coated nylon fabric strap with folding clasp

Posted at

Apr 29, 2025, 10:32 PM

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Omega Speedmaster ref. 3520.50 Automatic Triple Date

Omega - 3520.50 · $2,550

A 39mm automatic Omega Speedmaster with triple date complication, featuring a healthy timegrapher data and functioning chronograph.

Condition: Minimal signs of wear, honest wear throughout
Size: 39mm diameter
Bracelet size: Full-sized
Box papers: No box or papers included

Posted at

Apr 29, 2025, 9:37 PM

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Omega Speedmaster Triple Date 3521.30

Omega - 3521.30 · $1,700

A beautiful white Omega Speedmaster Triple Date with a 3 date complication showing the day, date, and month.

Condition: Very good condition, with some normal wear on the case bezel and bracelet
Size: 39mm diameter
Movement: 1150
Accessories: N/A

Posted at

Apr 29, 2025, 9:34 PM

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Omega Seamaster NTTD on NATO | Omega Speedmaster Moonphase | Tudor Black Bay 58 Burgundy Dial

Omega - 210.92.42.20.01.001 · $6,900

This Omega Speedmaster Moonphase is a high-end watch with a 44.25mm case size, features a moon phase display, and comes with an additional OEM leather strap.

Condition: Very Good
Strap: additional OEM leather strap
Box And Papers: yes
Case Size: 44.25mm

Posted at

Apr 29, 2025, 9:26 PM

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4️⃣4️⃣0️⃣0️⃣Omega Speedmaster Moonwatch

Omega - 311.304.230.01005 · $4,400

2017 Omega Speedmaster Moonwatch with Haselite crystal and Sapphire crystal exhibition back cover, comes with original caseback, bracelet, and warranty card.

Bracelet material: Brushed steel
Crystal type: Haselite

Posted at

Apr 29, 2025, 7:08 PM

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OMEGA Speedmaster Day‑Date 3523.30.00 | Double Boxed + Pictogram Card

OMEGA - 3523.30.00 · $2,450.002

The OMEGA Speedmaster Day-Date 3523.30.00 is a luxury watch featuring a clean crystal and dial, with some minor imperfections on the case and bracelet. The movement is strong but running slightly slow.

Condition: Preowned with small dings and scratches in case and bracelet, movement running slightly slow
Bracelet size: 7.5in (fits larger side)
Movement condition: running slowly, could be regulated by watchmaker
Case/bracelet condition: small dings and scratches, light and easily polishable

Posted at

Apr 29, 2025, 6:50 PM

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Omega Speedmaster - Dark Side of the Moon - 311.92.44.51.01.007 ( new / 2024 )

Omega - 311.92.44.51.01.007 · $9,795.01

This Omega Speedmaster Moonwatch Dark Side of the Moon features a Titanium Deployment Clasp and Ceramic Black Case with a 44.25mm diameter.

Condition: Brand New
Case material: Ceramic, Titanium
Movement: Omega Co-Axial Calibre 9300

Posted at

Apr 29, 2025, 3:55 PM

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