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
50

Current Listings

[WTS] 2025 Omega Speedmaster Meteorite Moonphase Complete set + Serialized AD Sales Receipt

2025 Omega Speedmaster Meteorite Moonphase Complete set + Serialized AD Sales Receipt

Omega - 304.30.43.52.01.001 · $85,000
The Omega Speedmaster Moonphase Meteorite features a unique dial made from genuine meteorite, set into a beautifully finished piece of cosmic history on your wrist.

  • Condition: Excellent pre-owned condition
  • Year: 2025
  • Case size: 43mm diameter
  • Dial material: meteorite
Posted at
Mar 16, 2026, 12:13 AM
Active
[WTS] Omega Speedmaster TV Dial

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A hard-to-find Omega Speedmaster with a unique 'TV dial' design from the late 1970s. It's currently running and keeping time but requires servicing on its pushers.

  • Condition: Pre-owned, unpolished with pusher issues requiring service
  • Pusher service needed: true
  • Original ownership duration: 40 years
Posted at
Mar 15, 2026, 9:13 PM
Active
[WTS] Omega Speedmaster Professional Moonwatch (Hesalite)

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This Omega Speedmaster Professional Moonwatch Hesalite is a pre-3861 Speedmaster powered by manual-wind Caliber 1861, continuing the lineage of historic Moonwatch models.

  • Condition: Very Good
  • Year: 2020
  • Power source: Manual-Wind Caliber 1861
  • Warranty period: 2 years
Posted at
Mar 15, 2026, 7:37 PM
Active
[wts] 2024  OMEGA SPEEDMASTER WHITE DIAL
310.30.42.50.04.001 $7599

2024 OMEGA SPEEDMASTER WHITE DIAL 310.30.42.50.04.001 $7599

2024 OMEGA SPEEDMASTER WHITE DIAL FOR SALE Additional Details:

  • Year: 2024
Posted at
Mar 15, 2026, 4:38 PM
Active
[WTS] Omega Speedmaster Professional Hesalite I 310.30.42.50.01.001 | Dated 03/2023 | $5,399

Omega Speedmaster Professional Hesalite I 310.30.42.50.01.001 | Dated 03/2023 | $5,399

This Omega Speedmaster Professional Hesalite I is a manual wind, mechanical watch with a stainless steel case and black dial, featuring hesalite crystal.

  • Condition: Preowned, Very Good Condition
  • Case Material: Stainless Steel
  • Band Material: Stainless Steel
  • Movement Type: Manual Wind, Mechanical
Posted at
Mar 15, 2026, 3:45 PM
Active
[WTS] Omega Speedmaster Japan Edition 3211.50.00

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Omega - 3211.50.00 · $2,599
This Omega Speedmaster Japan Edition is in great pre-owned condition with limited signs of wear throughout.

  • Condition: pre-owned with limited signs of wear
  • Case Size: 40mm diameter
Posted at
Mar 15, 2026, 1:58 PM
Active
[WTS] Omega Speedmaster GSOTM Meterorite, Full Set w/ Extra Strap

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Omega - 311.63.44.51.99.001 · $12,000
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  • Condition: Excellent
  • Case size: 44.25mm
  • Movement: Automatic
  • Case material: Ceramic
Posted at
Mar 15, 2026, 1:18 PM
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[WTS] Omega Speedmaster Date 40 Box Papers Excellent Condition Blue Dial

Omega Speedmaster Date 40 Box Papers Excellent Condition Blue Dial

Omega - 3212.80.00 · $3,198
The Omega Speedmaster Date Chronograph is one of OMEGA's most iconic timepieces, featuring a date window and iconic Seamster logo on the caseback.

  • Condition: Excellent Condition
  • Case Material: Steel
  • Bracelet Material: Bracelet
  • Box Papers: Yes
Posted at
Mar 15, 2026, 1:14 PM
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[WTS] Omega Speedmaster Silver 40 Box Papers

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Omega - 3212.80.00 · $2,999
The Omega Speedmaster is a chronograph date watch with small seconds and tachymeter, featuring an iconic design.

  • Condition: Pre-Owned with minor scratches
  • Case Material: Steel
  • Bracelet Material: Bracelet
  • Dimensions: 40 mm diameter
Posted at
Mar 15, 2026, 1:05 PM
Active