Omega Speedmaster Speedmaster Professional Moonwatch Sapphire Sandwich / Strap
Reference 3873.50.31
About this watch
The Omega Speedmaster Professional Moonwatch Sapphire Sandwich, also known as the 3873.50.31, is a testament to the brand's rich history and commitment to precision. This luxury watch features a stunning black dial with contrasting white stick and dot indexes, giving it a classic yet modern vibe suitable for both formal and casual occasions. The round stainless-steel case strikes a perfect balance between presence and elegance, measuring 42mm in diameter. A sapphire crystal on both the front and back of the watch enhances durability and provides a stunning view of the intricate movement through the open case back. With its iconic design, reliable Omega caliber 1863 movement, and versatile wearability, this watch earns its place in any collection. Whether you're a history buff, a watch connoisseur, or someone looking to elevate your style, the Speedmaster is a worthy companion. It's not just about telling time; it's about cherishing every moment.
Key Features
- Omega caliber 1863 movement
- 48-hour power reserve
- 21,600 vibrations per hour
- Chronograph function for timing events
- Sapphire crystal on front and back of the watch
- Water resistance up to 50 meters
- Leather strap with secure buckle
Specifications
- Brand
- Omega
- Family
- Speedmaster
- Model
- Speedmaster Professional Moonwatch Sapphire Sandwich / Strap
- Reference
- 3873.50.31
- Movement
- 1863
- Movement Features
-
- Hours, Minutes, Small Seconds
- Chronograph
- Case
- Stainless Steel 42mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 50
Current Listings
![[WTS] 1991 Omega Speedmaster Moonwatch Ref 3590.50 with abstract](https://external-preview.redd.it/l8DDFtmJVJnFvF9famKVm67DnsH6mB5c_b1MR5QdNYw.jpeg?auto=webp&s=bf4f63d23645431d43113e057cef34cb2d9f6e4f)
1991 Omega Speedmaster Moonwatch Ref 3590.50 with abstract
A 1991 Omega Speedmaster Moonwatch with a caliber 861 movement and tritium dial and hands, in excellent condition and appearing unpolished.
- Condition: Excellent, unpolished
- Movement: Caliber 861
- Serial number: 482774XX
- Bracelet size range: fits wrists over 7.5"
![[WTS] White Dial Omega Speedmaster](https://preview.redd.it/nuxirgirs78g1.jpeg?auto=webp&s=de0956fe6b97d3791c88be1df2863ec7e26828bc)
White Dial Omega Speedmaster
This Omega Speedmaster features a white dial and includes both the omega rubber on deployant and the omega OEM bracelet. It is in pristine condition, along with its full packaging.
- Condition: pristine
- Diameter: 40mm
- Bracelet type: rubber on deployant and omega oem bracelet
![[WTS] Omega Speedmaster Broad Arrow 321.10.42.50.01.001 2019](https://preview.redd.it/549g304s178g1.jpg?width=640&crop=smart&auto=webp&s=a9210c8d4582321f7d84ca46b0a7a9c093f2977d)
Omega Speedmaster Broad Arrow 321.10.42.50.01.001 2019
This Omega Speedmaster Broad Arrow is a 2019 model with a crisp case and running perfectly, featuring a massive bracelet.
- Condition: Incredible-condition
- Dimensions: 42mm diameter
- Year: 2019
![[WTS] Omega Speedmaster. Broadarrow. Clean. 馃敟](https://preview.redd.it/fqa0nx5mo68g1.jpeg?auto=webp&s=6de94360bc084bcf99c038e903e674ee0802d307)
Omega Speedmaster. Broadarrow. Clean. 馃敟
The Omega Speedmaster is a classic watch with a broadarrow design, featuring strong lume.
- Condition: Very clean and strong lume
- Location: NJ USA
![[WTS] DISCONTINUED OMEGA SPEEDMASTER RACING (Ref. 331.12.42.51.03.001)](https://preview.redd.it/fmrq77cn768g1.jpg?width=640&crop=smart&auto=webp&s=8e9ac994e85d1fd74cac0acfb6b0980ec1251ba1)
DISCONTINUED OMEGA SPEEDMASTER RACING (Ref. 331.12.42.51.03.001)
This Omega Speedmaster Racing is a discontinued model from 2023 in very good condition and comes with several accessories.
- Condition: Very good, lightly used
![[WTS] Omega Speedmaster Quartz LCD](https://preview.redd.it/lykvzanwa18g1.jpg?width=640&crop=smart&auto=webp&s=a15231da9e20eb9c402eb96acc7617827d1f70bb)
Omega Speedmaster Quartz LCD
a quartz-powered watch with an LCD display
![[WTS] Omega Speedmaster Professional (Sapphire Sandwich) 310.30.42.50.04.001](https://preview.redd.it/mvqoaf3gf08g1.jpg?width=640&crop=smart&auto=webp&s=4167be919567ae6d94f2b167bf0ca54f2ec72bda)
Omega Speedmaster Professional (Sapphire Sandwich) 310.30.42.50.04.001
This Omega Speedmaster Professional 'Sapphire Sandwich' is a highly sought-after model, purchased in 2024 and comes as a complete set with original boxes, warranty cards, and travel case. It's in amazing condition with all functions working normally.
- Condition: like-new condition, practically zero wear marks
- Original boxes: true
- Warranty cards year: 2024
- Strap type: aftermarket rubber strap
![[WTS] 2021 Omega Speedmaster Dark Side Of The Moon 44.25mm Black Ceramic - $8,000](https://preview.redd.it/x8hfywi8b08g1.png?width=640&crop=smart&auto=webp&s=82860c6ac27be439933caedf7947ab49f40f0581)
2021 Omega Speedmaster Dark Side Of The Moon 44.25mm Black Ceramic - $8,000
2021 Omega Speedmaster Dark Side Of The Moon Apollo 8 with a 44.25mm black ceramic case, featuring an adjustable leather strap and additional black textile strap.
- Condition: Excellent overall condition
- Case size: 44.25mm diameter
- Warranty: 5 year manufacturer warranty
![[WTS] Omega Speedmaster Michael Schumacher The Legend Collection $3,499](https://preview.redd.it/r8vflt1va08g1.jpeg?auto=webp&s=25e6a4993ae3b86ab603921ac2c303643887f0f2)
Omega Speedmaster Michael Schumacher The Legend Collection $3,499
The Omega Speedmaster Michael Schumacher The Legend Collection is a limited run watch that celebrates the world of motorsport and Michael Schumacher, with a sleek checkered carbon fiber dial and sporty red accents.
- Condition: great pre-owned condition with minor wear marks
- Case diameter: 44mm
- Lug width: 21mm
- Water resistance: 100m depth rating