Omega Speedmaster Speedmaster Professional Moonwatch Apollo-Soyuz 20th Anniversary
Reference 3691.50.31
About this watch
The Omega Speedmaster Professional Moonwatch Apollo-Soyuz 20th Anniversary is a rare and luxurious timepiece that blends history with exceptional craftsmanship. Crafted from yellow gold, this watch boasts a closed case back, sapphire glass, and a hand-wound movement, the Omega caliber 1863. Its chronograph functionality allows for accurate elapsed time measurement, while its water resistance rating of up to 50 meters ensures durability. The classic black dial with stick and dot indexes ensures readability, and the combination of gold accents creates a striking contrast. With only 200 units produced, this limited edition piece is a coveted collector's item that captures the essence of what a luxury watch should be.
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Key Features
- Yellow Gold Case
- Sapphire Glass
- Omega Caliber 1863 Hand-Wound Movement
- Chronograph Functionality
- Water Resistance up to 50 Meters
- Limited Edition Piece (200 units produced)
- Luxurious Yellow Gold Design
Specifications
- Brand
- Omega
- Family
- Speedmaster
- Model
- Speedmaster Professional Moonwatch Apollo-Soyuz 20th Anniversary
- Reference
- 3691.50.31
- Movement
- 1863
- Movement Features
-
- Hours, Minutes, Small Seconds
- Chronograph
- Case
- Yellow Gold 42mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 50
Current Listings
Omega Speedmaster rattrapante split second 3540.50
A 1999-2000 Omega Speedmaster with a rattrapante feature, also known as a split second chronograph, which is one of the most complex movements in a watch. The case has never been polished and retains its original lines and finish. It comes on an Omega rubber bracelet.
- Condition: Good
- Bracelet type: Omega rubber
- Movement complexity: rattrapante feature (2 chronographs)
- Production quantity: around 5000 units made
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2017 Omega Speedmaster Professional Moonphase 42mm 3576.50
- Size: 42mm diameter
- Movement: Calibre 9900
- Material: Stainless Steel
![[WTS] 2025 Omega Speedmaster Professional “Sapphire Sandwich” 42mm 310.30.42.50.01.002](https://external-preview.redd.it/nnm_7fGAL-hyi-__EO0YY_bDrHLcPjranv0ezJJmwss.jpeg?auto=webp&s=54de084d6994a256b43f45963b25ad7564b7811a)
2025 Omega Speedmaster Professional “Sapphire Sandwich” 42mm 310.30.42.50.01.002
2025 Omega Speedmaster Professional 'Sapphire Sandwich' 42mm, a model with a unique design and features.
- Condition: Brand new in box (BNIB)
- Size: 42mm diameter
- Water Resistance: unknown
- Features: Master Chronometer, Pictogram
![[WTS] Omega Speedmaster Moonwatch Professional – Sapphire Sandwich](https://external-preview.redd.it/rbYOl47aL7PaMriOOedYxNo0HflTrWvm5Js0_wJdayM.jpeg?auto=webp&s=8997f457fa6fefe64a0a50eae4235602244014a7)
Omega Speedmaster Moonwatch Professional – Sapphire Sandwich
A true icon, the Omega Speedmaster Moonwatch Professional features a scratch-resistant sapphire crystal and an exhibition case back revealing a manual-wind movement with modern precision and historic charm.
- Condition: Excellent condition, worn carefully and sparingly
- Case size: 42mm diameter
- Crystal type: Sapphire crystal front and back
- Movement: Co-Axial Master Chronometer Caliber 3861, manual wind
![[WTS] Omega Speedmaster Professional 145.012](https://external-preview.redd.it/-NeWdH0DPwuiFNnpaKnrqIM817huMMqQ5xbrVdAAcdk.jpeg?auto=webp&s=ba9bfcd16196a375000b50786dc8d7d02e4b0e74)
Omega Speedmaster Professional 145.012
This Omega Speedmaster Professional 145.012-67 is a rare example of the model, featuring a beautifully faded grey bezel and original box. It has been recently serviced and comes with Omega Extract of the archives paperwork showing its history.
- Caliber: 321
- Bezel type: DON (Dot over ninety)
- Bracelet type: flat link uncle seiko
Omega Speedmaster Moonwatch Professional Sapphire Sandwich
The Omega Speedmaster Moonwatch Professional features a stainless steel case with sapphire crystal front and back, powered by the manual-wind Co-Axial Master Chronometer Caliber 3861 movement.
- Condition: Excellent
- Case size: 42mm diameter
- Crystal material: sapphire
- Movement type: manual-wind
1991 Omega Speedmaster Ref: 3590.50 with Accessories
A 1991 Omega Speedmaster Ref: 3590.50 in excellent condition, featuring a black bezel and tritium dial with a creamy yellow patina.
- Condition: Very nice with some wear from use
- Case size: 42mm
- Bracelet links: 20 (+1 spare)
- Bezel condition: Excellent
![[WTS] Omega Speedmaster Professional Moonwatch Full Steel Tritium Dial Blue Insert 1970’s (Unpolished)](https://external-preview.redd.it/QcGzwiJ21_i5muayXHydYYFR-_StiWLDkKJjL3uKCbA.jpg?auto=webp&s=6d50aaeaad052b8897e758d786736a5d5c4742cb)
Omega Speedmaster Professional Moonwatch Full Steel Tritium Dial Blue Insert 1970’s (Unpolished)
This Omega Speedmaster is a remarkable example of the iconic Moonwatch, preserved in its original never-polished condition. The black tritium dial and hands remain in outstanding condition, displaying a rich and even patina across the indices.
- Condition: Unpolished, all-original
- Year: 1970s
- Size: 42mm diameter
- Bracelet size range: fits wrists up to approximately 8 inches (20cm)
Omega Speedmaster. 38mm. Gorgeous lume. Ceramic bezel.
A beautiful Omega Speedmaster in 38mm size, featuring gorgeous lume and a clean grey dial.
- Case Size: 38mm
- Bezel Material: Ceramic