Omega Speedmaster Speedmaster Professional Moonwatch Plexi / See-Through / Leather

Reference 3872.50.01

Omega Speedmaster Professional Moonwatch Plexi / See-Through / Leather

About this watch

The Omega Speedmaster Professional Moonwatch Plexi is a stunning celebration of design, functionality, and history. Its sleek stainless-steel case, measuring 42mm in diameter, strikes a perfect balance between elegance and masculinity. The black dial with stick and dot indexes is both stylish and functional, while the tachymeter bezel adds a sporty touch. The open case back showcases the intricate workings of the Omega caliber 1863 movement, allowing watch enthusiasts to appreciate the craftsmanship that goes into each timepiece. This hand-wound chronograph features 18 jewels and boasts a power reserve of 48 hours, delivering accurate timekeeping with its frequency of 21,600 vibrations per hour. The chronograph functionality is where this watch truly shines, allowing you to measure elapsed time with precision. With a water resistance of 50 meters, the Omega Speedmaster Professional Moonwatch can handle splashes and brief immersions. Its rich history adds a layer of nostalgia and significance to the watch, making it not just a fashion statement but also a smart investment. Whether you're a seasoned collector or a first-time buyer, this watch offers something special for everyone.

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Key Features

Omega caliber 1863 movement
Hand-wound chronograph with 18 jewels
48-hour power reserve
Tachymeter bezel
Plexiglass crystal
Open case back
50-meter water resistance

Specifications

Brand

Omega

Family

Speedmaster

Model

Speedmaster Professional Moonwatch Plexi / See-Through / Leather

Reference

3872.50.01

Movement

1863

Movement Features

Hours, Minutes, Small Seconds
Chronograph

Case

Stainless Steel 42mm

Dial Color

Black

Crystal

Plexi

Water Resistance

Current Listings

Omega Speedmaster 3861 Bracelet

Omega - 3861 · $750

This Omega Speedmaster is a brand new model with additional features such as tool free microadjust and it has not been worn.

Condition: New, never worn
Links included: true
Clasp condition: plastic still on
Adjustment method: tool free microadjust

Posted at

Jan 17, 2026, 4:39 PM

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[WTS] Omega Speedmaster Professional Sapphire Sandwich – Cal. 1863 – New OEM Omega 3861 Bracelet With Quick Adjust Clasp – Spiralwinder Dot Over 90 Ceramic Bezel

Omega Speedmaster Professional Sapphire Sandwich – Cal. 1863 – New OEM Omega 3861 Bracelet With Quick Adjust Clasp – Spiralwinder Dot Over 90 Ceramic Bezel

Omega - Speedmaster Professional Sapphire Sandwich · $5,600

This Omega Speedmaster Professional Sapphire Sandwich is powered by the highly regarded caliber 1863 and features a Spiralwinder Ceramic DON tachymètre bezel. The watch has been upgraded with a new OEM 3861 bracelet installed at the Omega Boutique.

Condition: Excellent
Movement: Cal. 1863
Crystal: Sapphire front & back
Bezel: Spiralwinder Ceramic DON (Dot Over Ninety) tachymètre bezel

Posted at

Jan 17, 2026, 11:51 AM

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OMEGA Speedmaster 🌘🌑“Dark Side of the Moon”Co-Axial Master Chronometer Chronograph|Ref. 310.92.44.51.01.001| 2025 | Full Set in Like New Condition

OMEGA - 310.92.44.51.01.001 · $11,750

The OMEGA Speedmaster 'Dark Side of the Moon' is a modern icon that blends OMEGA's space-faring heritage with advanced materials, crafted entirely in black ceramic for exceptional scratch resistance and lightweight wearability.

Condition: Excellent
Case size: 44.25 mm
Set: Full set (box, papers, 5 year warranty)
Movement: Co-Axial Master Chronometer Calibre 9908

Posted at

Jan 17, 2026, 11:13 AM

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Omega Speedmaster. 39mm. Special Dial.

Omega - Speedmaster · $2,450

A 39mm Omega Speedmaster with a special texture dial is being sold. The watch is located in NJ USA and comes with the option for a Facetime viewing.

Case diameter: 39mm
Movement type: automatic

Posted at

Jan 17, 2026, 10:20 AM

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Omega Speedmaster. 39mm. White Ceramic. Very nice.

Omega - Speedmaster · $3,100

This Omega Speedmaster is a 39mm watch with white ceramic and strong lume. It's a great timepiece that comes with additional photos available upon request.

Case size: 39mm
Material: white ceramic
Lume strength: strong

Posted at

Jan 17, 2026, 10:17 AM

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Omega Speedmaster FOIS – Full Set – $4,300 Shipped OBO

Omega - Speedmaster FOIS · $4,300

The Omega Speedmaster FOIS is a widely regarded, wearable watch that captures classic early Speedmaster proportions with its 39.7mm straight-lug case.

Condition: Very good overall
Case size: 39.7mm diameter
Movement type: Manual winding
Crystal material: Hesalite

Posted at

Jan 16, 2026, 11:54 PM

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Omega Speedmaster Reduced

Omega - Speedmaster Reduced

A used Omega Speedmaster Reduced purchased from Japan with original box and papers.

Condition: Great working shape
Original Box And Papers: Yes, with Japanese documentation
Extra Links: Fitting up to 7.5-8 inches

Posted at

Jan 16, 2026, 9:13 PM

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OMEGA Speedmaster "Dark Side of the Moon" Apollo 8 Ref. 311.92.44.30.01.001 + Apollo 8 Gen2 Strap + Deployant Clasp - ULTIMATE SET! 🔥$10,000🔥

OMEGA - 311.92.44.30.01.001 · $10,000

The OMEGA Speedmaster 'Dark Side of the Moon' Apollo 8 commemorates the 50th anniversary of the Apollo 8 mission, featuring a black ceramic case with a skeletonized and laser-ablated dial. The watch is powered by the Calibre 1869 movement and comes in an ultimate set with various accessories.

Condition: UNWORN
Case material: black ceramic
Diameter: 44.25mm
Movement: Calibre 1869 with blackened bridges and mainplate

Posted at

Jan 16, 2026, 8:45 PM

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