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
![[WTS] Omega Speedmaster Triple Date 3521.30](https://preview.redd.it/49xz1epmlvxe1.jpg?width=640&crop=smart&auto=webp&s=8f554e8a4280fae231e7e8acc8444b0b276ab362)
Omega Speedmaster Triple Date 3521.30
A beautiful white Omega Speedmaster Triple Date with a 3 date complication showing the day, date, and month.
- Condition: Very good condition, with some normal wear on the case bezel and bracelet
- Size: 39mm diameter
- Movement: 1150
- Accessories: N/A
![[WTS] Omega Seamaster NTTD on NATO | Omega Speedmaster Moonphase | Tudor Black Bay 58 Burgundy Dial](https://external-preview.redd.it/ZTY4bWZ4bGJodnhlMX2ZAmm3m__UWu54-FfX3UPUvQkTQycMWMcuh2VFgbPU.png?format=pjpg&auto=webp&s=4087ca8c8d5742544a1c4a23d5746ad4c9e664ed)
Omega Seamaster NTTD on NATO | Omega Speedmaster Moonphase | Tudor Black Bay 58 Burgundy Dial
This Omega Speedmaster Moonphase is a high-end watch with a 44.25mm case size, features a moon phase display, and comes with an additional OEM leather strap.
- Condition: Very Good
- Strap: additional OEM leather strap
- Box And Papers: yes
- Case Size: 44.25mm
![[WTS] 4️⃣4️⃣0️⃣0️⃣Omega Speedmaster Moonwatch](https://preview.redd.it/2fk1dosnvuxe1.jpg?width=640&crop=smart&auto=webp&s=d9fd3a577e9d313d603b01dd837a607e5efabc35)
4️⃣4️⃣0️⃣0️⃣Omega Speedmaster Moonwatch
2017 Omega Speedmaster Moonwatch with Haselite crystal and Sapphire crystal exhibition back cover, comes with original caseback, bracelet, and warranty card.
- Bracelet material: Brushed steel
- Crystal type: Haselite
OMEGA Speedmaster Day‑Date 3523.30.00 | Double Boxed + Pictogram Card
The OMEGA Speedmaster Day-Date 3523.30.00 is a luxury watch featuring a clean crystal and dial, with some minor imperfections on the case and bracelet. The movement is strong but running slightly slow.
- Condition: Preowned with small dings and scratches in case and bracelet, movement running slightly slow
- Bracelet size: 7.5in (fits larger side)
- Movement condition: running slowly, could be regulated by watchmaker
- Case/bracelet condition: small dings and scratches, light and easily polishable

Omega Speedmaster - Dark Side of the Moon - 311.92.44.51.01.007 ( new / 2024 )
This Omega Speedmaster Moonwatch Dark Side of the Moon features a Titanium Deployment Clasp and Ceramic Black Case with a 44.25mm diameter.
- Condition: Brand New
- Case material: Ceramic, Titanium
- Movement: Omega Co-Axial Calibre 9300

Omega Speedmaster - FOIS - 310.30.40.50.06.001 ( excellent / 2024 )
This is an excellent condition Omega Speedmaster FOIS 39.7mm Stainless Steel Case with the Omega 3861 Calibre, a First Omega in Space model.
- Condition: Excellent condition
- Case size: 39.7mm diameter
- Caliber: Omega 3861
![[WTS] Omega Speedmaster Reduced 3511.12 Yellow JAPAN 🇯🇵 EXCLUSIVE](https://preview.redd.it/e2mpkxukhtxe1.jpeg?auto=webp&s=48290e5baccab3356aab103ba464c34b8e04602e)
Omega Speedmaster Reduced 3511.12 Yellow JAPAN 🇯🇵 EXCLUSIVE
Omega Speedmaster Reduced, a watch exclusively released in Japan, comes with the original box and booklet, along with a 7-inch bracelet.
- Bracelet length: 7 inches
- Box and booklet included: true
![[WTS] Omega Speedmaster Professional 145.012 Cal. 321](https://preview.redd.it/akmasi6risxe1.jpg?width=640&crop=smart&auto=webp&s=5084d38a38e69ef2ee564931ff119c623b94f235)
Omega Speedmaster Professional 145.012 Cal. 321
This Omega Speedmaster Professional features a Cal. 321 movement and an exhibition caseback. The watch has aged beautifully with a faded grey bezel and dial patina.
- Movement: Calibre 321
- Bracelet: Flat link Uncle Seiko bracelet
- Box: Original 1968 Olympic box (possibly)
![[WTS] New 2025 Omega Speedmaster Moonwatch Professional Sapphire Black Dial Full 4/25 Ref: 310.30.42.50.01.002](https://preview.redd.it/bfpi8r2scsxe1.jpg?width=640&crop=smart&auto=webp&s=a1f2757ced8bcad94a9fe6985055f13730693282)
New 2025 Omega Speedmaster Moonwatch Professional Sapphire Black Dial Full 4/25 Ref: 310.30.42.50.01.002
This is a brand new Omega Speedmaster Moonwatch Professional with a black dial and sapphire crystal case.
- Condition: 10/10, unworn with stickers
- Diameter: 42mm
- Water Resistance: 50M
- Movement: 3861