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 CK2998 Limited Edition “Blue Panda” - Full Set - Reduced!

Omega - CK2998 · $7,795

This Omega Speedmaster CK2998 Limited Edition 'Blue Panda' is a modern classic with a striking design. It features an opaline silver dial with blue subdials and a manual winding OMEGA calibre 1861. The watch comes in its complete set, including the outer box, inner box, instruction manual, card sleeve, international warranty card, and pictograms card.

Condition: Excellent, barely worn
Case size: 40mm
Movement caliber: 1861

Posted at

Aug 31, 2025, 6:08 PM

Active

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Vintage Omega Speedmaster Mark 40 Triple Calendar 175.0084 Watch 39MM $2500

Omega - 175.0084 · $2,500

A vintage Omega Speedmaster Mark 40 Triple Calendar watch in good condition, featuring an automatic movement and all functions working.

Condition: Minimal signs of use
Case Size: 39mm
Movement Condition: fresh
Lug To Lug: 45mm

Posted at

Aug 31, 2025, 5:33 PM

Active

View listing on r/WatchExchange

Omega Speedmaster. CK2998. Blue Panda. Like New. Clean..

Posted at

Aug 31, 2025, 4:44 PM

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Omega Speedmaster Professional “Replica” 3594.50 – Broad Arrow Reissue

Omega - 3594.50 · $8,000

The listing is about an Omega Speedmaster Professional "Replica" 3594.50 – Broad Arrow Reissue.

Movement: Calibre 1861
Bracelet: Leather strap with metal buckle

Posted at

Aug 31, 2025, 3:37 PM

Active

View listing on r/WatchExchange

Omega Speedmaster. MK40. Triple Date. 🔥

Posted at

Aug 31, 2025, 1:29 PM

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Omega Speedmaster Triple Date calendar chronograph

Posted at

Aug 31, 2025, 1:00 PM

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Omega Speedmaster Moonwatch Professional Hesalite Black Dial 8/21 Ref: 310.30.42.50.01.001 $4899.00

Omega - 310.30.42.50.01.001 · $4,899

This Omega Speedmaster Moonwatch Professional features a black lacquered dial, manual winding mechanism, and 50M water resistance. It's a beautiful timepiece with a domed Hesalite crystal and closed case back.

Condition: Great pre-owned condition, some hairlines on case, bracelet and clasp.
Size: 42mm
Movement: 3861
Water Resistance: 50m

Posted at

Aug 31, 2025, 12:45 PM

Active

View listing on r/WatchExchange