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 Reduced 3510.50 – Black Dial – Automatic – On Bracelet – $2,850 Shipped

Omega - 3510.50 · $2,850

a Omega Speedmaster Reduced on a bracelet with black dial and automatic movement

Case size: 40mm

Posted at

Mar 1, 2026, 4:32 AM

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Omega 3510.21 Speedmaster Panda ‘Marui’ Japan LE (2,000pcs) – Full Set – $6,300 Shipped

Omega - 3510.21 · $6,300

This Omega Speedmaster Automatic 'Marui' Panda is a Japan-market limited edition featuring a highly collectible white dial with black sub-dials configuration. It has an Omega Cal. 3220 movement, recently serviced, and comes in its original box and papers.

Condition: Clean white dial with strong contrast sub-dials, case remains sharp with honest wear, bezel in good condition with light signs of use, box shows aging consistent with period
Case Size: 39mm x 44mm x 12mm
Lug Width: 18mm
Movement: Omega Cal. 3220 (based on ETA 2890-A2 with Dubois-Dépraz module)

Posted at

Mar 1, 2026, 3:50 AM

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Omega Speedmaster 3513.33 Automatic Date 40

Omega - 3513.33 · $2,700

A beautiful Omega Speedmaster automatic watch, featuring a 40mm case and 100m water resistance.

Case Diameter: 40mm
Water Resistance: 100m
Lug Width: 18mm

Posted at

Mar 1, 2026, 1:33 AM

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Omega 50th Anniversary Silver Snoopy Speedmaster

Omega - 310.32.42.50.02.001 · $15,000

This Omega Speedmaster features a silver dial, blue ceramic bezel, and animated NASA Snoopy caseback complication.

Condition: Excellent pre-owned condition
Case material: Stainless steel
Bracelet: Omega speedmaster metal bracelet
Included items: factory white delivery box, blue speedmaster presentation box, blue outer box, Omega speedmaster travel case, original hang tags, original price stickers, warranty card, Master Chronometer card, pictogram card, manuals

Posted at

Feb 28, 2026, 8:39 PM

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Omega Speedmaster Professional Moonwatch White Dial + EXTRAS. Complete Set w/ Box, Papers and Warranty!

Warranty: still under warranty
Extras: box, papers

Posted at

Feb 28, 2026, 5:06 PM

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Omega Speedmaster 38 | Black Dial Chronograph | 38mm $4500

Omega - 324.30.38.50.01.001 · $4,500

The Omega Speedmaster 38 features the iconic design in a versatile 38mm case, powered by the reliable Omega Caliber 3330 chronograph movement.

Condition: Very good
Case size: 38mm
Water resistance: 100m depth rating

Posted at

Feb 28, 2026, 4:19 PM

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Omega Speedmaster. 39mm. Special Dial.

Omega - Speedmaster · $2,250

This Omega Speedmaster is an automatic watch with a special dial and 39mm case size.

Diameter: 39mm
Movement: Automatic

Posted at

Feb 28, 2026, 11:13 AM

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- Omega Speedmaster Professional 1861 Bracelet

Omega - Speedmaster Professional 1861 · $650

This is a stainless steel bracelet for the Omega Speedmaster Professional 1861 watch, sold in pristine condition with all links and screws included.

Condition: Pristine
Bracelet material: stainless steel

Posted at

Feb 28, 2026, 10:09 AM

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[WTS] Omega Speedmaster Racing 44.25mm New. Reference 329.30.44.51.06.001. Full kit, shipping, inner and outer boxes, hang tag, manuals. 12/27/2025 warranty card. $7750 shipped from Orlando, Florida.

Omega Speedmaster Racing 44.25mm New. Reference 329.30.44.51.06.001. Full kit, shipping, inner and outer boxes, hang tag, manuals. 12/27/2025 warranty card. $7750 shipped from Orlando, Florida.

Omega - 329.30.44.51.06.001 · $7,750

This Omega Speedmaster Racing features a large case size of 44.25mm, making it a statement piece for any watch collector. The watch comes with a full kit, including shipping, inner and outer boxes, hang tag, manuals, and a warranty card valid until 12/27/2025.

Condition: New
Case Size: 44.25mm

Posted at

Feb 27, 2026, 5:32 PM

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View listing on r/WatchExchange