Omega Speedmaster Speedmaster Professional Missions Gemini XII

Reference 3597.10.00

About this watch

The Omega Speedmaster Professional Missions Gemini XII stands out as a beacon of excellence in the world of luxury watches. This limited edition timepiece, produced between 1997 and 1998, is a tribute to NASA's Gemini program and features a stunning design that whispers elegance without being loud. The sleek stainless steel case, black dial with stick indexes and dot markers, and tachymeter bezel all contribute to its timeless appeal. Powered by the Omega caliber 1861 movement, a hand-wound chronograph known for its reliability and precision, this watch is suitable for both everyday wear and special occasions. With only 200 units made, owning an Omega Speedmaster Gemini XII is like holding a piece of horological history. Its historical significance adds a layer of intrigue that few other watches can match, making it a must-have for collectors, space enthusiasts, and those who appreciate the finer things in life.

Buy Now on Jomashop

This is an affiliate link

Key Features

Limited edition of 200 units
Omega caliber 1861 hand-wound chronograph movement
42mm diameter stainless steel case
Black dial with stick indexes and dot markers
Tachymeter bezel for measuring speed
Water resistance of 50 meters
20mm lug width for versatility

Specifications

Brand

Omega

Family

Speedmaster

Model

Speedmaster Professional Missions Gemini XII

Reference

3597.10.00

Movement

1861

Movement Features

Small Seconds, Hours, Minutes
Chronograph

Case

Stainless Steel 42mm

Dial Color

Black

Crystal

Plexi

Water Resistance

Current Listings

Omega Speedmaster Cal 321 "Ed White" - 311.30.40.30.01.001

Omega - 311.30.40.30.01.001 · $17,000

This Omega Speedmaster Cal 321 is a rare and highly sought-after watch, with each movement being double assembled by a single watchmaker in Bienne.

Condition: Gently worn with minimal signs of wear
Movement caliber: 321
Annual production: <1000

Posted at

Apr 30, 2026, 5:36 PM

Active

View listing on r/WatchExchange

2024 Omega Speedmaster Professional Moonwatch White Dial 310.30.42.50.04.001 Full Set

Omega - 310.30.42.50.04.001 · $6,600

The Omega Speedmaster Professional Moonwatch is a 2024 model with a white dial, featuring a stainless steel case and manual winding movement.

Condition: Light scratches on the case and bracelet
Case size: 42mm diameter
Movement type: Manual Wind

Posted at

Apr 30, 2026, 5:14 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Brand New

Omega - 310.30.42.50.04.001 · $7,900

This is a Omega Speedmaster Moonwatch Professional with a white dial.

Condition: Brand New
Year of production: 2026

Posted at

Apr 30, 2026, 3:37 PM

Active

View listing on r/WatchExchange

2021 Omega Speedmaster Racing 329.32.44.51.01.001 Orange Full Set - $6,495

Omega - 329.32.44.51.01.001 · $6,495

2021 Omega Speedmaster Racing, a racing themed version of the iconic Speedmaster watch, featuring an orange color scheme and various accessories.

Condition: Excellent condition with minimal signs of wear
Year: 2021
Case Size: 44mm
Contents: Watch,Inner & Outer Box,Card Holder,International Warranty Card,Pictograms Card,Master Chronometer Card,Instructions Manual

Posted at

Apr 30, 2026, 9:53 AM

Active

View listing on r/WatchExchange

2025 Omega Speedmaster Sedna Gold 310.60.42.50.01.001 — Like New Condition, Box & Papers

Omega - 310.60.42.50.01.001 · $29,500

The Omega Speedmaster Sedna Gold elevates the iconic Moonwatch design with Omega’s proprietary Sedna gold and features a rich black dial.

Condition: Like new condition, ding on bezel near 12 o'clock
Box And Papers: Yes, complete with original box and papers (wallet not included)
Movement: Master Chronometer manual-wind
Size: [object Object]

Posted at

Apr 30, 2026, 9:10 AM

Active

View listing on r/WatchExchange

[US] Omega Speedmaster Moonphase - Black Dial - 44mm - 304.30.44.52.01.001

Omega - 304.30.44.52.01.001 · $6,750

A pre-owned Omega Speedmaster Moonphase watch in excellent condition, featuring a black dial and 44mm case size.

Condition: Fantastic condition
Case size: 44mm
Bracelet condition: minor hairlines

Posted at

Apr 30, 2026, 8:28 AM

Active

View listing on r/WatchExchange

[US] Omega Speedmaster Moonwatch Professional - 311.30.42.30.01.006 - 42mm - Big Box - Full Set

Omega - 311.30.42.30.01.006 · $5,650

Up for sale is an Omega Speedmaster Moonwatch Professional, a 42mm watch that functions perfectly mechanically without issue.

Condition: Fantastic with minor hairlines
Case size: 42mm diameter
Bracelet condition: minor hairlines

Posted at

Apr 30, 2026, 8:17 AM

Active

View listing on r/WatchExchange

Omega Speedmaster Moonwatch 310.32.42.50.01.001 Full Set + Exhibition Caseback

Omega - 310.32.42.50.01.001 · $5,170

This Omega Speedmaster Moonwatch Professional features the Co-Axial Master Chronometer Caliber 3861 and comes as a full set, including an aftermarket exhibition caseback.

Condition: Excellent overall condition with minor mark on Hesalite crystal
Crystal material: Hesalite
Caseback type: Exhibition (aftermarket) and solid (original)
Extras: Original purchase receipt from Omega

Posted at

Apr 29, 2026, 10:27 PM

Active

View listing on r/WatchExchange