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
50

Current Listings

[WTS] Omega Speedmaster Professional Moonwatch Hesalite 3861 — 2022

Omega Speedmaster Professional Moonwatch Hesalite 3861 — 2022

Omega - 3861 · $60,000
a luxury watch, Omega Speedmaster Professional Moonwatch Hesalite edition from 2022

  • Year: 2022
Posted at
May 3, 2026, 4:44 PM
Active
View listing on r/WatchExchange
[WTS] Omega Speedmaster Moonphase 2024 Complete Set Blue Ceramic Mint Condition

Omega Speedmaster Moonphase 2024 Complete Set Blue Ceramic Mint Condition

Omega - Speedmaster Moonphase 2024 · $7,915
The Omega Speedmaster Moonphase is a modern execution of the flagship model, featuring full blue ceramic construction and a stunning dial. It's lightweight, technical, and visually unique in the Speedmaster lineup. The watch feels special on the wrist.

  • Condition: Mint Condition
  • Case material: Blue Ceramic
  • Dial color: stunning
Posted at
May 3, 2026, 2:12 PM
Active
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[WTS] Omega Speedmaster Professional Moonwatch Ref: 311.30.42.30.01.005

Omega Speedmaster Professional Moonwatch Ref: 311.30.42.30.01.005

Omega - 311.30.42.30.01.005 · $5,250
This 'Big Box' Collector's set has the classic Omega Speedmaster Professional Moonwatch with a 42mm case, Hesalite Crystal, and closed caseback.

  • Condition: Very Good
  • Case size: 42mm
  • Movement: 1861 movement
Posted at
May 3, 2026, 1:29 PM
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[WTS] Omega Speedmaster 39mm. Triple Date. Automatic..

Omega Speedmaster 39mm. Triple Date. Automatic..

Omega - Speedmaster 39mm Triple Date Automatic · $1,895
A 39mm Omega Speedmaster with triple date and automatic movement.

  • Shipping: from NJ USA
  • Additional Pictures: available on dropbox
Posted at
May 3, 2026, 9:51 AM
Active
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[WTS] Omega Speedmaster Date ref. 3212.80.00 40mm | Great Condition (with Box, Booklet, Card & Serviced) | $2800

Omega Speedmaster Date ref. 3212.80.00 40mm | Great Condition (with Box, Booklet, Card & Serviced) | $2800

Omega - 3212.80.00 · $2,860
The Omega Speedmaster Date ref. 3212.80.00 is a versatile watch that blends classic chronograph functionality with everyday wearability. It features a deep blue dial, a tri-compax layout, and a date window at 3 o'clock. The watch also has a scratch-resistant sapphire crystal and a stainless steel bracelet.

  • Condition: Great condition
  • Case size: 40mm
  • Movement: Omega Calibre 1164 (Valjoux 7750 architecture)
  • Power reserve: 44 hours
Posted at
May 2, 2026, 11:41 PM
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[WTS] IF BLADERUNNER & A SPEEDY HAD A BABY! Rare Vintage Omega Speedmaster Teutonic Ghost Gray Bead-Blasted Ref 145.0044

IF BLADERUNNER & A SPEEDY HAD A BABY! Rare Vintage Omega Speedmaster Teutonic Ghost Gray Bead-Blasted Ref 145.0044

Omega - 145.0044 · $2,795
A rare vintage Omega Speedmaster Teutonic ref 145.0044 with a unique gray dial and bead-blasted case, featuring an integrated bracelet and manual wound cal 861 movement.

  • Condition: Pre-owned, some wear and scratches
  • Dial color: Gray
  • Case size: 42MM diameter
  • Bracelet type: Original Omega integrated bracelet
Posted at
May 2, 2026, 10:58 PM
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[WTS] Omega Dark Side Of The Moon Speedmaster Ceramic "Dark Vader" 310.92.44.51.01.001

Omega Dark Side Of The Moon Speedmaster Ceramic "Dark Vader" 310.92.44.51.01.001

Omega - 310.92.44.51.01.001 · $13,650
This Omega Speedmaster Dark Side of the Moon 'Dark Vader' combines a slim manual wind case with a matte finished grained dial and striking red lacquered chrono seconds hand.

  • Condition: Excellent (mint condition)
  • Calibre: OMEGA 9908 Black Edition
  • Power reserve: 60 hours
  • Crystal type: scratch-resistant sapphire crystal with anti-reflective treatment on both sides
Posted at
May 2, 2026, 9:14 PM
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[WTS] Omega Speedmaster Professional Hesalite. Full Set.

Omega Speedmaster Professional Hesalite. Full Set.

Omega - 3861 · $5,500
The Omega Speedmaster Professional Hesalite is a chronometer that comes in very good condition. It has been used occasionally and keeps excellent time. The watch includes the full set of original accessories.

  • Condition: very good
  • Warranty Cards: 2 sets (dated 3/6/2021)
  • Originality: full set
  • Case Condition: minor scratches
Posted at
May 2, 2026, 7:19 PM
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[WTS] Omega Speedmaster Chrono Blue Dial 43mm - 329.30.43.51.03.001 Full Set - Like New Condition - Houston, TX 🔥💰6,297💰🔥 + 🏷️

Omega Speedmaster Chrono Blue Dial 43mm - 329.30.43.51.03.001 Full Set - Like New Condition - Houston, TX 🔥💰6,297💰🔥 + 🏷️

Omega - 329.30.43.51.03.001 · $6,297
The Omega Speedmaster Chronoscope is a stylish and functional wristwatch designed for unisex adults with a blue dial, mechanical manual movement, water resistance up to 50 meters, and chronometer function.

  • Condition: Like new
  • Case Size: 43mm
  • Water Resistance: 50m
  • Movement: Mechanical manual movement
Posted at
May 2, 2026, 5:10 PM
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