Omega Speedmaster Speedmaster Professional Moonwatch Sapphire Sandwich / Strap

Reference 3873.50.31

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 Automatic MK40 Day Date Ref 3520.53

Omega Speedmaster Automatic MK40 Day Date Ref 3520.53

Omega - 3520.53 · $2,650
One of the coolest Speedmaster variants, featured in A Man and His Watch, with a tritium dial and luminova hands.

  • Condition: Pre-owned, with wear and dings on the bezel, insert, and case
  • Case size: 39mm diameter
Posted at
Jun 11, 2025, 8:36 PM
Active
Omega Speedmaster Professional Tokyo 2020 522.30.42.30.03.001

Omega Speedmaster Professional Tokyo 2020 522.30.42.30.03.001

Omega - 522.30.42.30.03.001 · $4,900.005
This Omega Speedmaster Professional Tokyo 2020 is a high-end watch that comes with its original boxes and books, but no warranty card. It's in excellent condition.

  • Condition: Excellent condition
  • Box And Papers: includes
  • Warranty Card: no
Posted at
Jun 11, 2025, 7:30 PM
Active
[WTS] Omega Speedmaster Professional Sapphire 3861

Omega Speedmaster Professional Sapphire 3861

Omega - 3861 · $5,100
A Omega Speedmaster Professional Sapphire Sandwich sold on an OEM rubber strap, also including an unworn leather strap and full kit of original accessories.

  • Condition: Excellent preowned
  • Strap included: 2
  • Case condition: preowned
Posted at
Jun 11, 2025, 4:16 PM
Active
Omega Speedmaster - First Omega in Space - FOIS - 310.30.40.50.06.001 ( new )

Omega Speedmaster - First Omega in Space - FOIS - 310.30.40.50.06.001 ( new )

Omega - 310.30.40.50.06.001 · $8,250.008
This Omega Speedmaster 3861 Anniversary Series is a brand new First Omega in Space (FOIS) model, reference # 310.30.40.50.06.001, featuring a stainless steel case and Omega 3861 calibre.

  • Condition: Brand New / Complete Set
  • Case Size: 39.7mm
  • Material: Stainless Steel
  • Calibre: Omega 3861
Posted at
Jun 11, 2025, 3:43 PM
Active
[WTS] White Omega Speedmaster Pro

White Omega Speedmaster Pro

A white dial Omega Speedmaster Pro comes with a box and card, and has a warranty dated July 2024.

  • Box: yes, included
  • Card: yes, included
  • Warranty: until July 2026
Posted at
Jun 11, 2025, 3:12 PM
Active
[WTS] OMEGA Speedmaster Dark Side of the Moon “Black Black”- DSOTM - 311.92.44.51.01.005

OMEGA Speedmaster Dark Side of the Moon “Black Black”- DSOTM - 311.92.44.51.01.005

This is a rare Omega Speedmaster Dark Side of the Moon "Black Black" watch, one of only 56 pieces made in this colorway.

  • Condition: Excellent condition, very little signs of wear
  • Case Diameter: 44mm
  • Band Material:
  • Movement Type:
Posted at
Jun 11, 2025, 11:39 AM
Active

2022 Omega Speedmaster Moonwatch Sapphire 42mm 310.30.42.50.01.002 Mint Complete

This 2022 Omega Speedmaster Moonwatch Sapphire 42mm is a first watch worn on the moon, featuring photos and a video on the seller's website.

  • Condition: Minty fresh
  • Case size: 42mm
  • Year: 2022
  • Contents: watch,inner & outer boxes,warranty card,pictogram,master chronometer,instruction booklet,black travel case,hang tag,cleaning cloth,Moonwatch Booklet
Posted at
Apr 7, 2025, 2:59 PM
Active
Omega Speedmaster Chronograph  - Blue - Stainless Steel - 38mm - Mint

Omega Speedmaster Chronograph - Blue - Stainless Steel - 38mm - Mint

This Omega Speedmaster Chronograph features a 38mm stainless steel case, blue dial, and automatic movement.

  • Condition: Pre-Owned - Mint
  • Case size: 38mm diameter
  • Bracelet type: Stainless Steel
  • Dial color: Blue
Posted at
Apr 5, 2025, 6:13 PM
Active
Omega Speedmaster 321 Ed White

Omega Speedmaster 321 Ed White

This Omega Speedmaster 321 Ed White is an original purchase from a US OB in 2023, worn sparingly since.

  • Condition: Good condition with minor scuffs
  • Warranty: includes warranty cards
  • Links: all links included
Posted at
Apr 4, 2025, 6:34 PM
Active