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

Omega Speedmaster Professional White 42MM - Ref 310.32.42.50.04.002 (NEW 2026 COMPLETE SET)

Omega - 310.32.42.50.04.002 · $7,300

A brand new Omega Speedmaster Professional White, reference number 310.32.42.50.04.002, comes with a complete set including the outer sleeve, box, cards, manuals, and more.

Condition: New
Case size: 42mm
Warranty date: 04/16/2026

Posted at

May 6, 2026, 6:05 PM

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2026 NEW Omega Speedmaster Reverse Panda 310.30.42.50.01.004 Unworn

Omega - 310.30.42.50.01.004 · $9,800

This new Omega Speedmaster Reverse Panda is an unworn modern Speedmaster that comes with the full set, including a stainless steel bracelet and sapphire crystal.

Condition: Like New
Material: Stainless Steel
Bracelet material: Stainless Steel
Size: 42mm diameter

Posted at

May 6, 2026, 4:07 PM

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2025 Omega Speedmaster Professional "Sapphire Sandwich" 310.30.42.50.01.002

Omega - 310.30.42.50.01.002 · $5,600

A lightly worn Omega Speedmaster Professional with a Calibre 3861 movement, sapphire crystals, and an aluminum tachymeter bezel.

Condition: lightly worn; excellent shape
Movement: Calibre 3861
Caseback: factory sealed, no modifications made
Bracelet: OEM steel bracelet, fully linked and comfortable to wear

Posted at

May 6, 2026, 2:46 PM

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Omega Speedmaster Moonwatch 3861 Sapphire 310.30.42.50.01.002 ( new / 2026 / box and papers )

Omega - 310.30.42.50.01.002 · $7,250

This is an Omega Speedmaster Moonwatch Professional Sapphire with a 42mm stainless steel case and 3861 Omega Master Chronometer Movement.

Condition: Brand new
Case size: 42mm diameter
Movement: 3861 Omega Master Chronometer Movement

Posted at

May 6, 2026, 12:55 PM

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Omega Speedmaster Moonwatch 3861 Hesalite 310.30.42.50.01.001 ( new / 2026 / box and papers )

Omega - 310.30.42.50.01.001 · $6,250

This Omega Speedmaster Moonwatch Professional is a brand new watch with all original packaging and papers, featuring a stainless steel case and 3861 Omega Master Chronometer Movement.

Condition: Brand new
Case size: 42mm diameter
Movement type: Master Chronometer

Posted at

May 6, 2026, 12:46 PM

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Omega Speedmaster Milano Cortina 2026 (Full Set, Like New)

Omega - 522.30.38.50.04.001 · $6,900

The Omega Speedmaster Milano Cortina 2026 features a varnished white dial with a frosted blue pattern, a stamped Olympic medallion caseback and is part of the full set with boxes, warranty card and other accessories.

Condition: Like New
Case size: 38mm diameter
Thickness: 14.75mm
Lug to lug length: 44.96mm

Posted at

May 5, 2026, 10:07 PM

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- 1985 Omega Speedmaster Pro 3590.50 with Hang Tag - $5,800

Omega - 3590.50 · $5,800

This 1985 Omega Speedmaster Professional features a 42mm stainless steel case with a matte black tritium dial and black aluminum bezel insert. The watch has developed a beautiful patina over time, and the lume has aged to a cappuccino-like hue.

Condition: Excellent, unpolished condition with light wear for its age
Case size: 42mm
Bracelet length: Up to 19.5 cm / 7.67"
Crystal material: Hesalite

Posted at

May 5, 2026, 9:28 PM

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