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 white dial on bracelet with oem rubber included

Omega - Speedmaster · $7,500

A white Omega Speedmaster on bracelet, sold in good condition with some minor cosmetic issues.

Condition: Good condition with some swirls and light scratches (8.5/10)
Box And Papers: Full kit
Purchase Receipt: Original

Posted at

Jan 13, 2026, 2:42 PM

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Omega Speedmaster. Sapphire Sandwich. Automatic. Box, Papers.

Omega - 311.30.44.50.01.002 · $4,950

Omega Speedmaster, also known as the Sapphire Sandwich, is a high-end automatic watch that features strong lume.

Water Resistance: 30m
Box And Papers: true

Posted at

Jan 13, 2026, 1:38 PM

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View listing on r/WatchExchange

Omega Speedmaster Sapphire

Omega - Speedmaster Moonwatch · $5,900

A Omega Speedmaster Moonwatch listed for sale, stated to run great with excellent case condition.

Condition: Excellent
Case condition: Excellent

Posted at

Jan 13, 2026, 8:40 AM

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Omega Speedmaster Two Tone Reduced

Omega - 3714.20.80 · $2,500

A rare two-tone Omega Speedmaster reduced, featuring a white dial and gold subdials, housed in an 18k gold bezel.

Condition: Good, some wear on the case and bezel
Movement: Cal 1140
Size: 39mm diameter

Posted at

Jan 12, 2026, 8:37 PM

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Omega Speedmaster Racing Chronograph Silver Dial Watch 326.30.40.50.02.001 Complete Set

Omega - 326.30.40.50.02.001 · $5,895

The Omega Speedmaster Racing features a striking silver white dial with bold chronograph hands and counters, paired with a stainless steel case and bracelet for a timeless design with modern presence.

Condition: Excellent
Case material: stainless steel
Bracelet type: bracelet
Movement type: chronograph movement

Posted at

Jan 12, 2026, 6:52 PM

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Omega Speedmaster Moonwatch Professional 310.30.42.50.01.002 "Sapphire Sandwich."

Omega - 310.30.42.50.01.002 · $5,450

The Omega Speedmaster Moonwatch Professional, also known as the 'Sapphire Sandwich', is a modern iteration of the timepiece that went to the moon. It features a sapphire crystal front and caseback, redesigned bracelet, and Co-Axial Master Chronometer movement.

Condition: Excellent
Case material: Sapphire crystal front and caseback
Bracelet condition: Excellent
Movement: Co-Axial Master Chronometer

Posted at

Jan 12, 2026, 4:55 PM

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LNIB 3 Month Old Omega Speedmaster Pro Sapphire

Omega - Speedmaster Pro Sapphire Sandwhich · $7,300

This listing is for a new Omega Speedmaster Pro Sapphire Sandwhich watch. It has been worn for only three months and shows no signs of wear or scratches, with all original packaging and accessories included.

Condition: New condition, lightly used for 3 months
Age: 3 months old
Size: Assuming standard watch size (no specific details given)

Posted at

Jan 12, 2026, 4:05 PM

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