Omega Speedmaster Speedmaster Professional Moonwatch Sapphire Sandwich / Strap

Reference 3873.50.31

Omega Speedmaster Professional Moonwatch Sapphire Sandwich / Strap

About this watch

The Omega Speedmaster Professional Moonwatch Sapphire Sandwich, also known as the 3873.50.31, is a testament to the brand's rich history and commitment to precision. This luxury watch features a stunning black dial with contrasting white stick and dot indexes, giving it a classic yet modern vibe suitable for both formal and casual occasions. The round stainless-steel case strikes a perfect balance between presence and elegance, measuring 42mm in diameter. A sapphire crystal on both the front and back of the watch enhances durability and provides a stunning view of the intricate movement through the open case back. With its iconic design, reliable Omega caliber 1863 movement, and versatile wearability, this watch earns its place in any collection. Whether you're a history buff, a watch connoisseur, or someone looking to elevate your style, the Speedmaster is a worthy companion. It's not just about telling time; it's about cherishing every moment.

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MSRP: $5,400

Market Price: $3,887

Key Features

Omega caliber 1863 movement
48-hour power reserve
21,600 vibrations per hour
Chronograph function for timing events
Sapphire crystal on front and back of the watch
Water resistance up to 50 meters
Leather strap with secure buckle

Specifications

Brand

Omega

Family

Speedmaster

Model

Speedmaster Professional Moonwatch Sapphire Sandwich / Strap

Reference

3873.50.31

Movement

1863

Movement Features

Hours, Minutes, Small Seconds
Chronograph

Case

Stainless Steel 42mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

Current Listings

2024 Omega Speedmaster Moonwatch Professional White Dial 310.30.42.50.04.001 – Full Set

Omega - 310.30.42.50.04.001

2024 Omega Speedmaster Moonwatch Professional White Dial for sale, full set

Posted at

Mar 18, 2026, 12:24 AM

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Omega Speedmaster Reduced Tritium Patina (Read Comment)

This Omega Speedmaster Reduced has a beautiful patina and is in great condition overall, but it needs a new pusher to be restored to its original state.

Posted at

Mar 17, 2026, 10:43 PM

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Omega Speedmaster “Two Counter”in Blue 311.93.44.51.03.001 ($6650 obo)

Omega - 311.93.44.51.03.001 · $6,650

A 2020 Omega Speedmaster Two Counter in Titanium with a Blue Ceramic Bezel, featuring a two-counter design and coming as a full set with box and papers. The watch has been worn sparingly and is still under warranty from a dealer in Japan.

Condition: Like new, minor wear on bracelet
Bracelet condition: minor wear
Warranty: still under warranty from dealer in Japan (requires servicing in Japan)
Movement accuracy: +2 seconds per day at purchase

Posted at

Mar 17, 2026, 8:07 PM

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Omega Speedmaster Silver Snoopy Award – New/Unworn

Omega - 310.32.42.50.02.001 · $14,850

A Omega Speedmaster Silver Snoopy Award celebrating NASA's Silver Snoopy Award presented to Omega following the Apollo 13 mission, featuring an animated Snoopy caseback and silver dial with blue accents.

Condition: New / Unworn
Case size: 42mm
Movement type: Omega Co-Axial Master Chronometer Caliber 3861

Posted at

Mar 17, 2026, 6:53 PM

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Omega Speedmaster 3570.50- $3900

Omega - 3570.50 · $3,900

For sale is an Omega Speedmaster 3570.50, a well-maintained timepiece with original accessories.

Condition: Good condition
Bracelet: Original

Posted at

Mar 17, 2026, 12:18 PM

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Omega Speedmaster Reduced 3510.50 Mint Full Set $3250

Omega - 3510.50 · $3,250

This Omega Speedmaster Reduced from 1998 features a stainless steel case, 39mm in diameter, and a matte black dial with Luminova. The watch has an automatic Omega caliber 3220 movement, which is an ETA 2890-2 with a Dubois-Depraz chronograph module.

Condition: Mint
Case material: Stainless steel
Case size: 39mm diameter
Movement type: Automatic Omega caliber 3220 (ETA 2890-2 with Dubois-Depraz chronograph module)

Posted at

Mar 17, 2026, 9:57 AM

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Omega Speedmaster 38 Co-Axial Chronograph 324.30.38.50.02.001

Omega - 324.30.38.50.02.001 · $3,500

A silver dial Omega Speedmaster 38 Co-Axial Chronograph in excellent condition. The watch features a chronograph function and is presented on a brown leather strap.

Condition: Excellent
Case condition: Minimal wear
Bracelet condition: Brand-new, unworn
Included accessories: Omega inner box, Omega outer box, Instruction manual, Pictograms card, Watchfinder certificate of authenticity, Original Omega stainless steel bracelet, Brown leather strap, Omega Cream Watch Pouch

Posted at

Mar 17, 2026, 8:49 AM

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Omega Speedmaster 3520.53 - $2,690

Omega - 3520.53 · $2,690

Up for sale is my Omega Speedmaster 3520.53, measuring 39mm with an automatic movement and steel case on an original Omega Steel speedmaster bracelet.

Condition: 8.8/10 - great shape with some usage marks and patina on subdials
Movement type: automatic
Case material: steel
Bracelet: original Omega Steel speedmaster bracelet

Posted at

Mar 16, 2026, 10:16 PM

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