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

Omega - 3513.53 · $1,680

This Omega Speedmaster features a 39mm dial and is powered by automatic movement calibre 1152.

Condition: clean condition overall, scratch on crystal above date
Movement caliber: calibre 1152
Bracelet fit: approx 7 inches

Posted at

Aug 24, 2025, 5:07 AM

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Omega Speedmaster Sapphire Sandwhich 3999$

Omega - 3573.50 · $3,999

This Omega Speedmaster Sapphire Sandwhich features a 42mm dial size, sapphire crystal on top, and an exhibition caseback with the cal 1861 manual winding movement.

Condition: clean condition overall
Dial Size: 42mm
Crystal Type: sapphire
Movement: cal 1861 manual winding

Posted at

Aug 24, 2025, 4:57 AM

Active

View listing on r/WatchExchange

Omega Speedmaster MK40 Schumacher Ref : 3520.53.00 Condition Good Price : 2800$

Omega - 3520.53.00 · $2,800

The Omega Speedmaster Day-Date Ref. 3520.53.00 is a vintage Moonwatch variant from the 1990s that blends a chronograph with a triple calendar and AM/PM indicator.

Condition: Good
Movement: Automatic, Omega caliber 1151 (based on Valjoux 7751)
Case size: 39mm diameter
Crystal type: Scratch-resistant sapphire

Posted at

Aug 23, 2025, 11:24 PM

Active

View listing on r/WatchExchange