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.

Buy Now on Jomashop

This is an affiliate link

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 “FOIS” 311.32.40.30.01.001 EXCELLENT CONDITION! $4950 shipped 🚨📣

OMEGA - 311.32.40.30.01.001 · $4,950

This is a preowned Omega Speedmaster 'First Omega in Space' in excellent condition, featuring a manual wind movement and complete set, including box and papers.

Condition: Excellent / like new
Movement: Caliber 1861
Case Size: 39.7mm diameter
Box Condition: shows wear

Posted at

Jan 15, 2026, 10:36 PM

Active

View listing on r/WatchExchange

OEM Omega Speedmaster Professional Bracelet and OEM Sinn H-Link Bracelet

Omega · $450

A collection of Omega and Sinn watch accessories, including an OEM Omega Speedmaster Professional bracelet and an OEM Sinn H-Link bracelet. The Omega bracelet is in mint condition and can fit up to a 7.5 inch wrist when attached to the watch.

Condition: Mint
Bracelet type (omega): Professional Bracelet
Sinn h-link: fully linked

Posted at

Jan 15, 2026, 8:40 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Chronograph Date 40mm 3212.80 | 2013 Complete Set

Omega - 3212.80 · $2,999

2013 Omega Speedmaster Chronograph Date with a 40mm case, featuring a manual winding movement and date function.

Condition: Excellent Pre-Owned Condition
Year: 2013
Bracelet links: 15

Posted at

Jan 15, 2026, 7:11 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Chronograph 38 324.33.38.40.04.001 | 2013 Full Set

Omega - 324.33.38.40.04.001 · $2,999

This is a 2013 Omega Speedmaster Chronograph 38 with crystal and bezel clean, slight wear on the case and clasp.

Condition: Pre-Owned with slight wear on case and clasp
Year Of Manufacture: 2013
Service History: Unknown

Posted at

Jan 15, 2026, 7:07 PM

Active

View listing on r/WatchExchange

🔥Omega Speedmaster 42MM "Silver Snoopy Award"- Ref 310.32.42.50.02.001 (NEW / UNWORN : DEC 2025 COMPLETE SET)🔥

Omega - 310.32.42.50.02.001 · $15,299

This Omega Speedmaster features a beautiful white dial and comes in a 42mm stainless case size. It is part of the Silver Snoopy Award collection, specifically from December 2025.

Condition: Brand New/Unworn
Case Size: 42mm diameter
Year: 2025

Posted at

Jan 15, 2026, 6:13 PM

Active

View listing on r/WatchExchange

2015 Omega Speedmaster Moonwatch 44.25mm 311.30.44.51.01.002 Black Dial - $5,000

Omega - 311.30.44.51.01.002 · $5,000

The watch being listed is a 2015 Omega Speedmaster Moonwatch with a 44.25mm black dial, featuring a stainless steel bracelet and leather strap.

Condition: Excellent overall condition
Bracelet condition: Stainless steel bracelet basically brand new, still has factory sticker on clasp
Included accessories: Original Omega Double boxed,Box and Papers - Yes,International Warranty card dated 2015,Pictograms Card with Leather Card holder,Operating Instructions booklet,Omega Hang Tag
Wrist size: 8.25inch

Posted at

Jan 15, 2026, 5:57 PM

Active

View listing on r/WatchExchange

Omega Speedmaster 3511.50 Reverse Panda JAPAN EDITION

Omega - 3511.50 · $2,150

For sale is an Omega Speedmaster 3511.50 Reverse Panda JAPAN EDITION in great condition, with a clean crystal and running properly.

Condition: great condition
Payment Methods Accepted: pretty much every payment method including crypto
Local Meeting Available: yes
Payment Method Not Accepted: PayPal

Posted at

Jan 15, 2026, 5:39 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Professional Moonwatch 3573.50

Omega - 3573.50 · $4,550

This Omega Speedmaster Professional Moonwatch is in excellent condition with hardly any signs of wear.

Condition: Excellent condition, hardly any signs of wear
Payment Methods Accepted: Pretty much every payment method including crypto with a small fee
No Paypal Accepted: true
Other Payments: cash, credit cards, etc.

Posted at

Jan 15, 2026, 5:32 PM

Active

View listing on r/WatchExchange

Omega Speedmaster date 3212.80

Omega - 3212.80 · $2,450

For sale is an Omega Speedmaster Date with a beautiful blue dial, coming double boxed.

Condition: great condition with some very light signs of wear
Diameter: 40mm

Posted at

Jan 15, 2026, 5:27 PM

Active

View listing on r/WatchExchange