Omega Speedmaster Speedmaster Professional Moonwatch Apollo-Soyuz 20th Anniversary

Reference 3691.50.31

About this watch

The Omega Speedmaster Professional Moonwatch Apollo-Soyuz 20th Anniversary is a rare and luxurious timepiece that blends history with exceptional craftsmanship. Crafted from yellow gold, this watch boasts a closed case back, sapphire glass, and a hand-wound movement, the Omega caliber 1863. Its chronograph functionality allows for accurate elapsed time measurement, while its water resistance rating of up to 50 meters ensures durability. The classic black dial with stick and dot indexes ensures readability, and the combination of gold accents creates a striking contrast. With only 200 units produced, this limited edition piece is a coveted collector's item that captures the essence of what a luxury watch should be.

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Key Features

Yellow Gold Case
Sapphire Glass
Omega Caliber 1863 Hand-Wound Movement
Chronograph Functionality
Water Resistance up to 50 Meters
Limited Edition Piece (200 units produced)
Luxurious Yellow Gold Design

Specifications

Brand

Omega

Family

Speedmaster

Model

Speedmaster Professional Moonwatch Apollo-Soyuz 20th Anniversary

Reference

3691.50.31

Movement

1863

Movement Features

Hours, Minutes, Small Seconds
Chronograph

Case

Yellow Gold 42mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

Current Listings

2024 Omega Speedmaster Moonwatch Sapphire REF 31030425001002 Full kit (Box, Papers, Extra links)

Omega - 31030425001002 · $6,999

2024 Omega Speedmaster Moonwatch Sapphire in excellent condition, barely worn, and well-kept. Includes full box, papers, extra links, and owners manual.

Condition: Pre-owned (2024 piece, well kept and in amazing condition)
Year: 2024
Included Accessories: Full box, papers, extra links, owners manual

Posted at

Oct 26, 2025, 12:14 AM

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Omega Speedmaster Reduced 3510.50 Recently Serviced

Omega - 3510.50.00 · $2,300

The Omega Speedmaster Reduced ref. 3510.50.00 delivers the iconic Moonwatch look in a more compact, automatic format, with its 39 mm stainless-steel case and black dial.

Condition: Excellent overall following a recent complete service
Case Diameter: 39mm
Case Material: Stainless steel
Bezel: Black aluminum tachymeter (minor mark near '60')

Posted at

Oct 25, 2025, 11:05 PM

Active

View listing on r/WatchExchange

Omega Speedmaster3590.50 – Unpolished Classic

Omega - 3590.50 · $55,000

a classic, unpolished Omega Speedmaster with a unique character

Material: steel
Band: leather strap

Posted at

Oct 25, 2025, 9:37 PM

Active

View listing on r/WatchExchange

: Omega Speedmaster Professional Moonwatch Full kit 12/24

Omega - Speedmaster Professional Moonwatch Hesalite · $4,950

This Omega Speedmaster Professional Moonwatch Hesalite is a full kit in very good condition. It features a Hesalite crystal and comes with a warranty card dated 12/24.

Condition: Very nice shape, small marks and scratches
Warranty card date: 12/24
Shipping method: FedEx

Posted at

Oct 25, 2025, 7:34 PM

Active

View listing on r/WatchExchange