Omega Speedmaster Speedmaster Professional Missions Gemini XI

Reference 3597.09.00

About this watch

The Omega Speedmaster Professional Missions Gemini XI, with its reference number 3597.09.00, is a piece of horological history that embodies the spirit of adventure and precision that Omega is renowned for. This limited edition, produced between January 1997 and July 1998, features a striking black dial, a robust stainless steel case, and a legendary Omega caliber 1861 movement. With only 200 units produced, this watch is a true collector's item and a testament to Omega's commitment to excellence and innovation.
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Key Features

  • Omega Caliber 1861 Hand-Wound Movement
  • 42mm Stainless Steel Case with Plexiglass Crystal
  • Tachymeter Bezel for Precise Measurements
  • Limited Edition of Only 200 Units Produced
  • 50m Water Resistance Suitable for Light Swimming
  • Stainless Steel Bracelet with 20mm Lug Width
  • Iconic Design that Stands the Test of Time

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Missions Gemini XI
Reference
3597.09.00
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 Reduced — $2500 USD

Omega Speedmaster Reduced — $2500 USD

Omega - 3510.50 · $2,500
For sale is my Omega Speedmaster Reduced with a 39mm case size and automatic movement.

  • Condition: Excellent
  • Case Size: 39mm
  • Movement Type: Automatic
Posted at
Jan 9, 2026, 5:55 PM
Active
[WTS] Omega Speedmaster Reduced, ref. 175.0032.1, Factory Service Papers, Box, Accessories

Omega Speedmaster Reduced, ref. 175.0032.1, Factory Service Papers, Box, Accessories

Omega - 175.0032.1 · $2,700
The Omega Speedmaster Reduced is a beautiful watch in excellent condition, with factory service papers and box included.

  • Condition: Excellent
  • Service cost: $850
  • Year of service: 2019
Posted at
Jan 9, 2026, 5:34 PM
Active
[WTS] Omega Speedmaster Moonphase BOX AND PAPERS 304.33.44.52.03.001

Omega Speedmaster Moonphase BOX AND PAPERS 304.33.44.52.03.001

For sale is an Omega Speedmaster Moonphase, this watch features a black leather strap with quick release function and comes double boxed with cards including warranty card.

  • Condition: Excellent condition with minimal wear on the straps
  • Straps: black leather omega strap with quick release function
  • Payment Methods Accepted: all payment methods except PayPal, crypto with small fee
  • Trading Brands: Tudor, Cartier, Rolex, Omega, Breitling, AP
Posted at
Jan 9, 2026, 4:52 PM
Active
[WTS] Omega Speedmaster Sapphire Sandwich

Omega Speedmaster Sapphire Sandwich

Omega - 31030425001002 · $6,000
A Omega Speedmaster Sapphire Sandwich, a manual winding watch featuring an original box and papers. The watch has a 42mm size.

  • Year: 2025
  • Size: 42mm diameter
  • Bracelet condition: barely used
Posted at
Jan 9, 2026, 4:22 PM
Active
[WTS] OMEGA SPEEDMASTER PROFESSIONAL [WHITE][EXCELLENT CONDITION AND BARELY WORN] $7,700 OBO

OMEGA SPEEDMASTER PROFESSIONAL [WHITE][EXCELLENT CONDITION AND BARELY WORN] $7,700 OBO

A well-maintained Omega Speedmaster Professional in excellent condition, barely worn.

  • Condition: EXCELLENT CONDITION AND BARELY WORN
  • Payment methods: PayPal, Zelle, Venmo
Posted at
Jan 9, 2026, 4:13 PM
Active
[WTS] 1979 Omega Speedmaster Professional Moon Watch

1979 Omega Speedmaster Professional Moon Watch

This 1979 Omega Speedmaster Professional Moon Watch is in excellent condition, featuring its original comfort stretch 1039 bracelet and a manual wind calibre 861 movement. The watch has aged nicely, with great lume and dial details.

  • Condition: Excellent with fine scratches, one visible dent in the bracelet and inconsistent timegraph results
  • Bracelet type: Comfort stretch 1039
  • Case size: 42mm diameter
  • Crown size: 43.2mm
Posted at
Jan 8, 2026, 2:55 PM
Active
[WTS] Omega Speedmaster Professional Moonwatch Full Steel 145.022-69 Ghost Bezel Yellow Patina Step Dial 1969 (Serviced) 🔥

Omega Speedmaster Professional Moonwatch Full Steel 145.022-69 Ghost Bezel Yellow Patina Step Dial 1969 (Serviced) 🔥

Omega - 145.022-69 · $5,425
This Omega Speedmaster Moonwatch presents beautifully in full steel, with a strong and sharp case and original step dial displaying warm yellow patina.

  • Condition: serviced, excellent definition
  • Size: 42mm diameter
  • Year: 1969
  • Movement service date: November 2022
Posted at
Jan 8, 2026, 2:54 PM
Active
[WTS] Omega Speedmaster Date 32105000 Full Set 3000USD

Omega Speedmaster Date 32105000 Full Set 3000USD

Omega - 32105000 · $3,000
A 2009 Omega Speedmaster Date 40mm watch that has been worn only a handful of times. It comes with the box and papers, one additional link, and is in great condition.

  • Condition: Overall great condition, a couple of light scratches on the side of the bezel and some scuffs on the band and bottom of the case.
  • Length: 7.5"
  • Purchase Year: 2023
  • Service History: Not serviced since purchase
Posted at
Jan 8, 2026, 1:08 PM
Active
[WTS] Omega Speedmaster Professional 3861 Sapphire Sandwich 310.30.42.50.01.002

Omega Speedmaster Professional 3861 Sapphire Sandwich 310.30.42.50.01.002

Additional details not provided.

  • Item: Sapphire Sandwich
Posted at
Jan 8, 2026, 2:50 AM
Active