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 Ref. 3510.50

Omega - 3510.50

The Omega Speedmaster Ref. 3510.50 is being listed for sale.

Posted at

Apr 17, 2026, 4:26 PM

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Omega Speedmaster “Ed White” Cal. 321 Tropical Dial Heavy Patina (Serviced)

Omega - 105.003-65 · $9,850

This Omega Speedmaster Ed White Ref. 105.003-65 is a historically significant watch with a stunning brown tropical dial and matching tritium hands that glow under UV light. It's one of the most collectible variants among Speedmaster enthusiasts, featuring strong proportions and a well-preserved stainless steel case.

Condition: good condition
Case size: 39mm diameter
Year produced: 1965
Movement serviced: yes, in July 2025

Posted at

Apr 17, 2026, 1:06 PM

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2026 Omega Dark Side of The Moon Apollo 8 Speedmaster w/ Rocketship 310.92.44.50.01.001 $12,499

Omega - 310.92.44.50.01.001 · $12,499

This 2026 Omega Dark Side of The Moon Apollo 8 Speedmaster is a high-end timepiece featuring a black ceramic case, black dial, and sapphire crystal. It has a 50-hour power reserve and is water-resistant up to 50m.

Condition: Excellent preowned condition, 9.9/10
Case size: 44.25mm diameter
Movement: 3869 caliber movement
Power reserve: 50 hours

Posted at

Apr 17, 2026, 12:52 PM

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Omega Speedmaster Date 38.5mm 3513.54

Omega - 3513.54 · $1,675

This Omega Speedmaster Date is a 38.5mm watch from 1998 in good condition, with signs of wear but no major marks.

Condition: good condition with some wear
Year: 1998
Size: 38.5mm
Functions: running great and functions properly

Posted at

Apr 17, 2026, 12:09 PM

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Omega Speedmaster Racing 326.30.40.50.03.001

Omega - 326.30.40.50.03.001 · $2,550

This Omega Speedmaster Racing is a high-end sports watch designed for performance and style.

Condition: great condition with some light wear
Water Resistance: 30m (no data found for depth rating)
Size: 40mm diameter

Posted at

Apr 17, 2026, 12:07 PM

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Omega Speedmaster Reduced 3510.50 Omega Buckle

Omega - 3510.50 · $2,075

For sale is an Omega Speedmaster Reduced in great condition with a nice patina on the dial.

Condition: great condition with some patina on the dial and wear on the strap and clasp
Band type: leather
Buckle type: Omega original

Posted at

Apr 17, 2026, 12:05 PM

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Omega Speedmaster Hesalite 2023, $5700

Omega - 310.30.42.50.01.001 · $5,700

This Omega Speedmaster Hesalite is a recent model, released in 2023, featuring a Preowned Condition with its original box and warranty.

Condition: Preowned
Shipping cost: $100 for USA
Payment options: Wire or Credit Card (+4.9% & 4 days clearance)
Warranty included: 2023 warranty

Posted at

Apr 17, 2026, 10:24 AM

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[US] Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm - 311.30.40.30.01.001 - Full Set

Omega - 311.30.40.30.01.001 · $15,700

Up for sale is an Omega Speedmaster Calibre 321 - Ed White - Black Dial - 39.7mm - Full Set, functions perfectly mechanically without issue.

Condition: pristine condition with minor hairlines on clasp, case, and bracelet
Case size: 39.7mm
Bracelet condition: pristine condition with minor hairlines on clasp, case, and bracelet

Posted at

Apr 17, 2026, 6:20 AM

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[US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set

Omega - 310.30.42.50.04.001 · $8,000

Up for sale is an Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set Watch is in pristine condition and functions perfectly mechanically, without issue.

Condition: pristine with minor hairlines on clasp, case, and bracelet
Case size: 42mm diameter

Posted at

Apr 17, 2026, 6:14 AM

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