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

2021 Omega Speedmaster Professional Moonwatch Sapphire Sandwich $5,999

Omega - 310.30.42.50.01.002 · $5,999

The Omega Speedmaster Moonwatch Professional sapphire sandwich version features a robust and elegant 42mm stainless steel case, updated Caliber 3861 movement, and superior magnetic resistance.

Condition: Excellent time keeping with no significant gain or loss
Case size: 42mm diameter
Case thickness: 13.2mm
Lug width: 20mm

Posted at

Jan 15, 2026, 12:27 PM

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Omega Speedmaster Professional Full Kit with Extras (reposted and reduced)

Omega - 3861 · $5,600

an Omega Speedmaster Professional Moonwatch with Cal. 3861 movement and Hesalite crystal, purchased from an Authorized Dealer.

Condition: Daily wear, shows normal wear/use
Movement: Cal. 3861 (Master Chronometer)
Bracelet type: Current bracelet with tool-less sliding clasp adjustment

Posted at

Jan 15, 2026, 10:55 AM

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Omega Speedmaster Reduced 3523.80.00 – Blue Dial – Full Set + Serialized Tag – Mint – $3,500

Omega - 3523.80.00 · $3,500

This Omega Speedmaster Reduced features a unique blue dial, classic proportions and wearability, making it an excellent alternative for collectors who want something rarer than the standard black-dial Reduced.

Condition: Mint
Movement: Automatic chronograph
Case size: 39mm diameter
Dial color: Blue

Posted at

Jan 15, 2026, 10:34 AM

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2023 Omega Speedmaster Calibre 321 “Ed White” 311.30.40.30.01.001 — Excellent Condition, Box & Papers

Omega - 311.30.40.30.01.001 · $75,000

This is a 2023 Omega Speedmaster Calibre 321 'Ed White' edition. It features a silver dial with a distinctive design.

Condition: Excellent Condition
Year: 2023
Movement: Calibre 321

Posted at

Jan 15, 2026, 8:21 AM

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2024 Omega Speedmaster “First Omega in Space” 310.30.40.50.06.001 – Full Set – $6,450 Shipped

Omega - 310.30.40.50.06.001 · $6,450

A modern reissue of the Speedmaster worn by Wally Schirra during the Sigma 7 mission, featuring a slim 39.7mm case with Master Chronometer technology.

Condition: Excellent
Case Size: 39.7mm
Water Resistance: 50m
Movement: Manual-wind chronograph (Omega Caliber 3861, Master Chronometer)

Posted at

Jan 14, 2026, 3:28 PM

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