Omega Speedmaster Speedmaster Professional Missions Gemini XI

Reference 3597.09.00

Omega Speedmaster Professional Missions Gemini XI

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 Professional Moonwatch Full Steel Yellow Patina 1978 (Serviced)

Omega Speedmaster Professional Moonwatch Full Steel Yellow Patina 1978 (Serviced)

Omega - 145.022-78 · $5,050
This Omega Speedmaster Professional Moonwatch features a yellow patina black tritium dial and a 42mm case with sharp lugs. The watch is fitted with its original bracelet and has been professionally serviced in February 2026.

  • Condition: Very good overall shape with some polishing on the case
  • Size: 42mm diameter
  • Year: 1978
  • Case material: full steel
Posted at
Apr 13, 2026, 12:18 PM
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[WTS] Omega Speedmaster Date Chronometer 3210.50.00 — Big Seahorse, Cal. 1164 (Serviced) — $2,200 Shipped (Tariff Coverd)

Omega Speedmaster Date Chronometer 3210.50.00 — Big Seahorse, Cal. 1164 (Serviced) — $2,200 Shipped (Tariff Coverd)

Omega - 3210.50.00 · $2,200
  • Condition: Honest wear consistent with age
  • Case serial: 86172720
  • Caseback medallion: Big Seahorse
  • Movement: Omega Cal. 1164 (ETA 7750 base)
Posted at
Apr 13, 2026, 12:13 PM
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[WTS][US] Omega Speedmaster Moonwatch Professional - Reverse Panda - 42mm - 310.30.42.50.01.004 - Full Set - BRAND NEW

[US] Omega Speedmaster Moonwatch Professional - Reverse Panda - 42mm - 310.30.42.50.01.004 - Full Set - BRAND NEW

Omega - 310.30.42.50.01.004 · $10,900
This Omega Speedmaster Moonwatch Professional features a 42mm case and is part of the Reverse Panda collection.

  • Condition: Brand new, unworn
  • Size: 42mm diameter
  • Set: Full Set
Posted at
Apr 13, 2026, 8:31 AM
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[WTS] BNIB Omega Speedmaster Professional 310.30.42.50.01.001 $6,800

BNIB Omega Speedmaster Professional 310.30.42.50.01.001 $6,800

Omega - 310.30.42.50.01.001 · $6,800
The Omega Speedmaster Professional features a robust and elegant 42mm stainless steel case powered by the updated caliber 3861 movement with its Co-Axial escapement, offering enhanced durability, accuracy, and visibility of the dial.

  • Condition: Brand new in box with warranty
  • Case size: 42mm diameter
  • Case thickness: 13.2mm height
  • Lug width: 20mm
Posted at
Apr 12, 2026, 4:32 PM
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[WTS] Omega Speedmaster Professional Sapphire Sandwich 2021 $6795

Omega Speedmaster Professional Sapphire Sandwich 2021 $6795

Omega - Speedmaster Professional Sapphire Sandwich 2021 · $6,795
This Omega Speedmaster Professional is a sapphire sandwich model from 2021.

  • Image Url: https://imgur.com/a/BQeTMO3
Posted at
Apr 12, 2026, 12:41 PM
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[WTS] Omega Speedmaster Schumacher Reduced - 3510.80

Omega Speedmaster Schumacher Reduced - 3510.80

Omega - 3510.80 · $3,799
The Omega Speedmaster Racing CART Edition is a rare and highly sought-after watch in excellent/mint condition, featuring a 39mm stainless steel case and vibrant signature blue dial.

  • Condition: Excellent/Mint
  • Case Size: 39mm diameter
  • Material: stainless steel
Posted at
Apr 12, 2026, 12:45 AM
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[WTS] PRICE DROP! Rare Vintage Omega Speedmaster Teutonic Ghost Gray Dial Bead Blasted Ref 145.0044

PRICE DROP! Rare Vintage Omega Speedmaster Teutonic Ghost Gray Dial Bead Blasted Ref 145.0044

Omega - 145.0040 · $2,795
This rare vintage Omega Speedmaster Teutonic features a gray ghost dial, bead-blasted case, and integrated bracelet. It has a manual wound cal 861 movement, chronograph functions, and original tritium lume.

  • Condition: Pre-owned with wear, scratches, and nicks
  • Diameter: 42mm
  • Movement: Manual wound Omega cal 861
  • Bracelet length: up to app 7.25 inches
Posted at
Apr 11, 2026, 8:17 PM
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[WTS] OMEGA Speedmaster Professional Moonwatch Sapphire Sandwich - Spiralwinder Ceramic Bezel Installed (+$260), OEM Bezel Included - Full Kit - 2025 Card - Quick Adjust Clasp - $6175 shipped CONUS

OMEGA Speedmaster Professional Moonwatch Sapphire Sandwich - Spiralwinder Ceramic Bezel Installed (+$260), OEM Bezel Included - Full Kit - 2025 Card - Quick Adjust Clasp - $6175 shipped CONUS

OMEGA - Speedmaster Professional Moonwatch · $6,175
Up for sale is my OMEGA Speedmaster sapphire sandwich, a daily wear watch from an authorized dealer in 2025. The watch has been maintained and passes a 5 bar pressure test. It is priced accordingly due to its cosmetic condition.

  • Condition: Pre-owned, daily wear with scratches and desk dive marks
  • Year: 2025
  • Ownership: Second owner
  • Authentication: [object Object]
Posted at
Apr 11, 2026, 6:43 PM
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[WTS] Omega Speedmaster 38 Co-Axial Chronograph 324.30.38.50.02.001

Omega Speedmaster 38 Co-Axial Chronograph 324.30.38.50.02.001

Omega - 324.30.38.50.02.001 · $3,999
This Omega Speedmaster 38 Co-Axial Chronograph features a silver dial and is in excellent overall condition with very minimal wear.

  • Condition: Excellent
  • Bracelet Condition: Brand-new, unworn
  • Included Items: Omega inner box,Omega outer box,Instruction manual,Pictograms card,Watchfinder certificate of authenticity
Posted at
Apr 11, 2026, 6:07 PM
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