Omega Speedmaster Speedmaster Professional Missions Gemini XII

Reference 3597.10.00

Omega Speedmaster Professional Missions Gemini XII

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] Omega Speedmaster Day Date Chronograph 3220.50 Black Dial 40mm $2,150

Omega Speedmaster Day Date Chronograph 3220.50 Black Dial 40mm $2,150

Omega - 3220.50 · $2,150
Omega Speedmaster Day Date Chronograph with a black dial and 40mm case size.

Posted at
Jan 26, 2026, 9:04 AM
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OMEGA SPEEDMASTER PROFESSIONAL MOONSWATCH 35735000 *FULL SET* (B&P) [WTS] $5750

OMEGA SPEEDMASTER PROFESSIONAL MOONSWATCH 35735000 *FULL SET* (B&P) $5750

Omega - 35735000 · $5,750
Full set, Speedmaster Professional Moonwatch in a box (B&P)

  • Set: full set
Posted at
Jan 25, 2026, 9:40 PM
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[WTS] Omega Speedmaster Broad Arrow 321.10.42.50.01.001 2019 $3,999 [USA]

Omega Speedmaster Broad Arrow 321.10.42.50.01.001 2019 $3,999 [USA]

Omega - 321.10.42.50.01.001 · $3,999
This Omega Speedmaster Broad Arrow is from 2019 with a crisp case and running perfectly. It comes on a massive bracelet that can fit most wrists.

  • Condition: Incredible-condition
  • Dimensions: 42mm diameter
  • Year: 2019
Posted at
Jan 25, 2026, 7:31 PM
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[WTS] 2007 Omega Speedmaster Date 3210.50 - $2,299

2007 Omega Speedmaster Date 3210.50 - $2,299

Omega - 3210.50 · $2,299
An Omega Speedmaster Date Chronograph ref. 3210.50 from 2007 in good overall condition, featuring a black dial and stainless steel bracelet.

  • Condition: Good overall condition, signs of wear
  • Case size: 40mm diameter
  • Serial number: 81.6M (circa 2007)
  • Dial color: Black
Posted at
Jan 25, 2026, 7:16 PM
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[WTS] Omega Speedmaster Professional Snoopy 50th Anniversary Ref: 310.32.42.50.02.001 BNIB

Omega Speedmaster Professional Snoopy 50th Anniversary Ref: 310.32.42.50.02.001 BNIB

Omega - 310.32.42.50.02.001 · $12,700
This Omega Speedmaster Snoopy 50th Anniversary watch is a brand new, unworn model with a complete package and extra travel box.

  • Condition: Brand new, never worn (BNIB)
  • Case Size: 40mm diameter
  • Water Resistance: unknown
  • Warranty: valid until end of 2025
Posted at
Jan 25, 2026, 6:07 PM
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[WTS] Omega Speedmaster sapphire Sandwich 2021, comes as full set (-2 links) $5,999 shipped

Omega Speedmaster sapphire Sandwich 2021, comes as full set (-2 links) $5,999 shipped

Omega - 310.30.42.50.01.002 · $5,999
Up for sale is a Omega Speedmaster sapphire sandwich from 2021, comes as full set with original inner/outer box and papers.

  • Condition: Excellent
  • Year: 2021
  • Case Size: 42mm
  • Material: Stainless Steel
Posted at
Jan 25, 2026, 3:52 PM
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[WTS] Omega Speedmaster "First Omega in Space" (FOIS) 2024 ed. w/ Box & Papers

Omega Speedmaster "First Omega in Space" (FOIS) 2024 ed. w/ Box & Papers

Omega - 310.30.40.50.06.001 · $7,100
This Omega Speedmaster "First Omega in Space" (FOIS) is the 2024 edition, featuring a ref. 310.30.40.50.06.001 model number.

  • Condition: very good
  • Year purchased: 2025
  • Box and papers included: true
Posted at
Jan 25, 2026, 2:48 PM
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[WTS] Omega Speedmaster Professional Full Kit w Extras!

Omega Speedmaster Professional Full Kit w Extras!

Omega - 3861 Hesalite · $5,500
This Omega Speedmaster Professional Moonwatch features a Cal. 3861 Master Chronometer movement and comes with upgrades such as a sapphire display caseback, making it a true Hesalite sandwich.

  • Condition: Pre-owned with normal wear/use consistent with daily rotation
  • Caliber: Cal. 3861 (Master Chronometer)
  • Bracelet adjustment type: tool-less sliding clasp
  • Caseback material front: Hesalite
Posted at
Jan 25, 2026, 1:30 PM
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[WTS] Omega "Michael Schumacher" Speedmaster Limited to only 5555.

Omega "Michael Schumacher" Speedmaster Limited to only 5555.

Omega - 3529.50.00 · $2,200
This limited edition Omega Speedmaster 'Michael Schumacher' chronograph features a stainless steel case, black racing dial, day/date display, tachymetre bezel, and is powered by an automatic movement. Produced in 2003, it measures 39mm in size.

  • Condition: neat and clean with some marks on the bezel
  • Case size: 39mm diameter
  • Bracelet size limit: 7.5 inch wrist
  • Water resistance: unknown
Posted at
Jan 25, 2026, 8:23 AM
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