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.

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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 Reduced - 3510.50 - AMAZING Patina - Bonus Omega Buckle on Strap - $2,650 Shipped

Omega - 3510.50 · $2,650

The Omega Speedmaster Reduced is a stylish and elegant watch with beautiful patina.

Patina: amazing

Posted at

May 27, 2026, 11:00 PM

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Omega Speedmaster 3523.80 39mm - $1,950

Omega - 3523.80 · $1,950

Up for sale is my Omega Speedmaster 3523.80 39mm in great condition.

Condition: great condition for its age
Movement: automatic caliber Omega 1151
Bracelet size: 7-7.25 inch wrists

Posted at

May 27, 2026, 9:24 PM

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2024 Omega Speedmaster Professional Moonwatch White Dial 310.30.42.50.04.001 Full Set

Omega - 310.30.42.50.04.001 · $7,615

2024 Omega Speedmaster Professional Moonwatch with a stainless steel case, 42mm diameter, and manual wind movement.

Condition: Very Nice Preowned with Some Small Light Scratches on the Case, Bracelet and Buckle
Case dimensions: 42mm diameter
Bezel material: Stainless Steel Black Bezel
Band type: Stainless Steel Bracelet with Micro Adjustment

Posted at

May 27, 2026, 8:06 PM

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Omega Speedmaster Professional 3861 "Sapphire Sandwich" (Ref. 310.30.42.50.01.002) adjustable clasp

Omega - 310.30.42.50.01.002 · $5,900

The Omega Speedmaster Professional 3861 'Sapphire Sandwich' is a highly sought-after chronograph configuration that demands a physical relationship with its mechanical intimacy. The watch features a crisp, metallic ratcheting resonance from the Caliber 3861 and a massive edge-to-edge sapphire caseback offering a mesmerizing view of the movement.

Condition: Lightly worn, very sharp lines, flawless finishes, immaculate aluminum tachymeter bezel
Bracelet type: Stainless steel
Bracelet width tapering: 20mm -> 15mm
Movement function: Manual-wind

Posted at

May 27, 2026, 6:56 PM

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Omega Speedmaster Co-axial Chronograph | Ref: 324.30.38.50.01.001 | w/ Box & Papers | $4200

Omega - 324.30.38.50.01.001 · $4,200

This Omega Speedmaster Co-axial Chronograph is a high-end watch that features a chronograph function, making it ideal for those who need to measure elapsed time.

Box: included
Papers: included

Posted at

May 27, 2026, 6:26 PM

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