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 Hesilate Ref. 310.32.42.50.01.001 Full Set + Original Receipt](https://preview.redd.it/638in08elwzg1.jpg?width=640&crop=smart&auto=webp&s=df96571ac990f1b9da976dc1dee0711629aa9b66)
Omega Speedmaster Hesilate Ref. 310.32.42.50.01.001 Full Set + Original Receipt
This Omega Speedmaster Moonwatch Professional features a Co-Axial Master Chronometer Caliber 3861 and is in excellent overall condition, with the notable exception of a very minor mark on the Hesalite crystal.
- Condition: Excellent overall condition with minor mark on Hesalite crystal and light signs of normal wear on case
- Movement: Co-Axial Master Chronometer Caliber 3861
- Crystal type: Hesalite
- Caseback type: Aftermarket exhibition caseback (original solid also included)
![[WTS][US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set](https://preview.redd.it/tjzoj633lwzg1.jpg?width=640&crop=smart&auto=webp&s=2da259a57fd5686cab7043ac0dd49cd3d252b322)
[US] Omega Speedmaster Moonwatch Professional - White Dial - 310.30.42.50.04.001 - Full Set
Up for sale is an Omega Speedmaster Moonwatch Professional - White Dial - Full Set Watch is in pristine condition and functions perfectly mechanically, without issue.
- Condition: pristine condition with minor hairlines on clasp, case, and bracelet
- Water Resistance: 30m
- Box Contents: inner box, outer box, removable travel case, historical booklet, user manual, microfiber cloth, master chronometer card, warranty card
![[WTS] Omega Speedmaster Professional (310.30.42.50.01.002)](https://preview.redd.it/541uwhfjcwzg1.jpg?width=640&crop=smart&auto=webp&s=1a90bb15887bc220519a97668663597985af53ad)
Omega Speedmaster Professional (310.30.42.50.01.002)
This Omega Speedmaster Professional features a black dial on a stainless steel bracelet, with a sapphire crystal and manual caliber 3861 movement.
- Condition: Excellent
- Case size: 42mm diameter
- Case material: Stainless Steel
- Bracelet material: Stainless Steel
![[WTS] Omega Speedmaster Snoopy New 4/2026, $15.2k!!](https://preview.redd.it/3uhak4g8fuzg1.jpg?width=640&crop=smart&auto=webp&s=a57f73e310e6d2b4e9ef7ac9be6bdc919c18db9e)
Omega Speedmaster Snoopy New 4/2026, $15.2k!!
This Omega Speedmaster is a limited edition 'Silver Snoopy Award' 50th Anniversary model, featuring a silver dial with blue accents and a Snoopy medallion.
- Condition: Brand New In Box (BNIB)
- Case size: 42mm
- Movement type: Manual Wind
- Depth rating: 50m
![[WTS] 1971 Omega Speedmaster Ref.145022-69 “ Straight Writing” $10,500 AUD / $7,800USD](https://preview.redd.it/p1wqu6oruszg1.jpg?width=640&crop=smart&auto=webp&s=b6c4279887eb83cb248ab034bc28d066e488717d)
1971 Omega Speedmaster Ref.145022-69 “ Straight Writing” $10,500 AUD / $7,800USD
A clean and honest early 1970s Omega Speedmaster Professional. Fully serviced by LWC in Perth in February 2026.
- Condition: Honest vintage condition, running well
- Case Material: Stainless steel
- Case Size: 42mm diameter
- Movement Type: Manual wind chronograph (cal. 861)
![[WTS] Genuine Omega Leather Strap, Speedmaster](https://preview.redd.it/9ggqk406dszg1.jpg?width=640&crop=smart&auto=webp&s=146302a8ec53e02613f38f63664ddc2fb82478d4)
Genuine Omega Leather Strap, Speedmaster
Up for sale is a genuine leather Omega Speedmaster band with a stainless steel deployant clasp, characterized by its light and comfortable design.
- Condition: Genuine leather strap with slight wear
- Width: 20mm
- Clasp material: stainless steel
- Shipping options: US shipping via FedEx or UPS
![[wts] 2024 Omega Speedmaster Moonphase
304.33.44.52.03.001 $7299](https://preview.redd.it/5e443hdy1szg1.jpg?width=640&crop=smart&auto=webp&s=2e0b5e27c1c48dadaf0a287beaa9cee072ac51d3)
2024 Omega Speedmaster Moonphase 304.33.44.52.03.001 $7299
This listing features a 2024 Omega Speedmaster Moonphase with two photo-realistic moons, one of OMEGA's most iconic timepieces.
- Condition: Pre Owned, Cosmetic Condition: 9/10
- Case Size: 44mm diameter
- Movement: 9904
- Power Reserve: 60 Hours
![[WTS] Omega Speedmaster Reduced 3510.50 Bracelet Set - 22 Links, Full size, excellent, OEM 1469/811](https://preview.redd.it/jpd7p9tprrzg1.jpg?width=640&crop=smart&auto=webp&s=daf047db7f639e5decb182270fd5228c5e78817f)
Omega Speedmaster Reduced 3510.50 Bracelet Set - 22 Links, Full size, excellent, OEM 1469/811
A vintage Omega Speedmaster Reduced bracelet set with 22 links, made of stainless steel and featuring an original Omega folding clasp.
- Condition: Excellent (94/100)
- Material: Stainless steel
- Metal finish: Original Omega finish
- Clasp type: Omega folding clasp
![[WTS] BNIB Omega Speedmaster Professional 310.30.42.50.01.001 $6,790](https://preview.redd.it/0ctdydnehrzg1.jpeg?auto=webp&s=74ad23e135844c1f446503923b99563ecef8cfbb)
BNIB Omega Speedmaster Professional 310.30.42.50.01.001 $6,790
The Omega Speedmaster Moonwatch Professional features a 42mm stainless steel case with a hesalite front and solid case back powered by the updated caliber 3861 movement.
- Condition: Brand new in box with warranty
- Case size: 42mm diameter
- Case thickness: 13.2mm
- Lug width: 20mm