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 MK40 Schumacher Triple Date Chronogaph Day-Night( Serviced ) Price 3200$

Omega - 3520.53 · $3,200

The Omega Speedmaster MK40 Schumacher is a neo-classic Speedmaster model from the late 1990s/early 2000s, featuring a black dial with red accents and an automatic chronograph movement. It also includes a triple date and moon phase function, sapphire crystal, and original Omega bracelet.

Condition: Very good vintage condition
Case size: 39mm diameter
Movement: Cal. 1151 (based on Valjoux 7751)
Bracelet: Original Omega bracelet

Posted at

May 10, 2026, 12:16 PM

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Omega Speedmaster Mark III 176.002 Blue Dial Orange Chrono Hand Mens Watch $2600

Omega - III 176.002 · $2,600

This Omega Speedmaster Mark III features a blue dial and orange chronograph hand, housed in a stainless steel case measuring 41mm in diameter.

Condition: Preowned, with some wear and marks
Model: Speedmaster Mark III
Movement: Automatic
Case material: Stainless steel

Posted at

May 10, 2026, 11:44 AM

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View listing on r/WatchExchange

Omega Speedmaster 3519.50.00 “Schumacher World Champion 2001” LE — Carbon Racing Dial — $2600 Shipped (Tariff Covered)

Omega - 3519.50.00 · $2,600

A Limited Edition Omega Speedmaster ref. 3519.50.00 “Schumacher World Champion 2001” featuring a carbon-style racing dial and bold lume plots, powered by an automatic chronograph movement.

Condition: Honest condition with light signs of use
Case size: 39mm
Lug-to-lug: 44mm
Thickness: 14mm

Posted at

May 10, 2026, 10:24 AM

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Omega Speedmaster 3539.50 Reduced Speedmaster Sapphire Automatic Cards + Box $3,500

Omega - 3539.50 · $3,500

This Omega Speedmaster Reduced Sapphire is an undated model with a reference number of 3539.50. It has been recently serviced and features good timegrapher numbers.

Condition: Excellent, recently polished
Bracelet size fits wrists: 19.5cm
Service history: Recently serviced by watchmaker

Posted at

May 10, 2026, 2:41 AM

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Omega Speedmaster Triple Date 3523.80 – Blue Dial – Automatic Triple Calendar Chronograph ( Serviced ) Price 2200$

Omega - 3523.80 · $2,200

The Omega Speedmaster Triple Date features a metallic blue dial, a three-day calendar layout, and a moon phase display, combining sporty style with elegant design.

Condition: Excellent vintage condition with minor signs of wear befitting its age
Case size: 39mm diameter
Movement: Omega Cal. 1151 Automatic Chronograph
Functions: Chronograph, Date, Month, Moon Phase

Posted at

May 10, 2026, 2:11 AM

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