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

42mm Omega Speedmaster Professional 1980’s (approximation) excellent condition

Omega - Speedmaster Professional · $6,500

This is a 42mm Omega Speedmaster Professional from the 1980's in excellent condition. It has been well-maintained and shows minimal signs of wear.

Condition: excellent condition
Diameter: 42mm

Posted at

Sep 2, 2025, 3:47 AM

Active

View listing on r/WatchExchange

Omega Speedmaster Triple Date 3523.30

Omega - 3523.30 · $1,850

A Omega Speedmaster Triple Date with a 39mm case size, recently serviced and running within specs.

Condition: Very good condition
Case Size: 39mm diameter

Posted at

Sep 1, 2025, 9:22 PM

Active

View listing on r/WatchExchange

Omega Speedmaster 40MM “FOIS” (First Omega In Space) Ref - 310.30.40.50.06.001 (NEW 2025 COMPLETE SET W/ STICKERS)

Omega - 310.30.40.50.06.001 · $7,250

This listing is for a brand new Omega Speedmaster 'FOIS' watch, featuring a 40MM case size and a First Omega In Space reference.

Condition: new and unworn
Case size: 40MM diameter
Included items: outer box,inner box,warranty card,pictograms card,master chronometer card,x2 manuals,microfiber,travel case
Payment methods: Zelle,Wire transfer,Amex +4%

Posted at

Sep 1, 2025, 8:38 PM

Active

View listing on r/WatchExchange