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 Moonwatch 3861 Sapphire Sandwich - Very Good Condition - Watch Only on Hirsch Robby Sailcloth - ONLY $4999 SHIPPED CONUS

OMEGA Speedmaster Moonwatch 3861 Sapphire Sandwich - Very Good Condition - Watch Only on Hirsch Robby Sailcloth - ONLY $4999 SHIPPED CONUS

OMEGA - Speedmaster Moonwatch 3861 Sapphire Sandwich · $4,999
This OMEGA Speedmaster Moonwatch is for sale, a well-cared-for timepiece that runs perfectly and comes with a worn Hirsch Robby sailcloth strap. The watch has been well-maintained and shows minimal signs of wear.

  • Condition: Very Good Condition
  • Strap Material: sailcloth
  • Case Back: sapphire
Posted at
May 13, 2026, 10:13 AM
Active
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[WTS] Omega Speedmaster Date (3513.30)

Omega Speedmaster Date (3513.30)

Omega - 3513.30 · $2,425
This Omega Speedmaster date features a silver dial on a steel bracelet, produced from 1998-2010. It comes with the hangtag and an open warranty card.

  • Condition: excellent condition for its age
  • Case Size: 39mm diameter
  • Case Material: stainless steel
  • Bracelet Material: stainless steel
Posted at
May 13, 2026, 8:25 AM
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[WTS] Omega Speedmaster 3523.80 39mm - $1,750

Omega Speedmaster 3523.80 39mm - $1,750

Omega - 3523.80 · $1,750
Up for sale is my Omega Speedmaster 3523.80 39mm, an automatic caliber Omega 1151 movement in a steel case on original Omega steel bracelet.

  • Condition: Great condition with minimal hairlines/marks on case, caseback, and bracelet
  • Caliber: Omega 1151 movement
  • Case size: 39mm diameter
  • Bracelet length adjustment: up to 7-7.25 inch wrists
Posted at
May 13, 2026, 4:06 AM
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[WTS] Omega. Speedmaster. Reverse Panda. Box and Papers. $1999 Massive Reduction!!

Omega. Speedmaster. Reverse Panda. Box and Papers. $1999 Massive Reduction!!

Omega - Speedmaster. Reverse Panda · $1,999
This Omega Speedmaster Reverse Panda is a high-end watch featuring a unique reverse panda dial. It comes complete with its original box, papers, and warranty.

  • Condition: 7.75/10, has wear around bezel and some flea bites on crystal
  • Bracelet length: ~20 links to fit 7inch wrist
  • Condition rating: 7.75/10
Posted at
May 12, 2026, 9:13 PM
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[WTS] Omega Speedmaster 18mm Bracelet Only OEM

Omega Speedmaster 18mm Bracelet Only OEM

Omega - 3513.50 · $399
This listing is for an Authentic Omega 18mm bracelet from a Speedmaster date 3513.50, suitable for small to medium sized wrists.

  • Bracelet type: OEM
  • Links: 19 links
  • Wrist size range: small to medium
Posted at
May 12, 2026, 6:31 PM
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[WTS] 2026 New White Omega Speedmaster, $8k

2026 New White Omega Speedmaster, $8k

Omega - Speedmaster · $8,000
2026 New White Omega Speedmaster for sale. Additional details can be found at the provided Imgur link.

  • Year: 2026
  • Color: white
Posted at
May 12, 2026, 5:21 PM
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[WTS] Omega Speedmaster Darkside of the Moon 311.92.44.51.01.005

Omega Speedmaster Darkside of the Moon 311.92.44.51.01.005

Omega - 311.92.44.51.01.005 · $6,995
For sale is a Omega Speedmaster Dark Side of the Moon, which comes in pristine condition as shown in the pics.

  • Condition: mint condition
  • Box and papers: included
  • Cards: none available
Posted at
May 12, 2026, 4:36 PM
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[WTS] Omega Speedmaster Date 3511.80.00 – Metallic Blue Dial 39mm – Fresh Service – $1,999 Shipped

Omega Speedmaster Date 3511.80.00 – Metallic Blue Dial 39mm – Fresh Service – $1,999 Shipped

Omega - 3513.82.00 · $1,999
This Omega Speedmaster Date features a striking metallic blue sunburst dial and a sportier take on the traditional Moonwatch aesthetic.

  • Condition: Very good, honest signs of wear consistent with age
  • Case size (excluding crown): 39mm
  • Lug-to-lug: 45mm
  • Thickness: 14mm
Posted at
May 12, 2026, 1:40 PM
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[WTS] Omega Speedmaster Triple Date 3523.30.00 Silver Dial 39mm – $2,299 Shipped

Omega Speedmaster Triple Date 3523.30.00 Silver Dial 39mm – $2,299 Shipped

Omega - 3523.30.00 · $2,299
This Omega Speedmaster Triple Date ref. 3523.30.00 combines classic Speedmaster DNA with a practical full calendar layout featuring day, date, month, chronograph, and 24-hour indicator in a compact case.

  • Condition: Very attractive condition
  • Case Size: 39mm (excluding crown)
  • Lug To Lug: 44mm
  • Thickness: 14mm
Posted at
May 12, 2026, 1:04 PM
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