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] Omega Speedmaster Professional Moonwatch 310.32.42.50.01.001](https://preview.redd.it/c3534h4viylf1.jpg?width=640&crop=smart&auto=webp&s=4b16243d84b9a296a37dd39e277d0bf2c072bed5)
Omega Speedmaster Professional Moonwatch 310.32.42.50.01.001
This Omega Speedmaster Professional Moonwatch is a high-end timepiece in excellent condition, featuring a forester bracelet and original nylon strap.
- Condition: amazing condition with hardly any signs of wear
- Bracelet: forester
- Strap: original nylon
- Box: missing outer box
![[WTS] 2025 Omega Speedmaster Professional Moonwatch ‘Silver Snoopy Award’ 50th 310.32.42.50.02.001 Complete Set Mint](https://external-preview.redd.it/rxNmRRxTvMxdF4_5jWEUNxLS8TeFJtrRxZMUIXFxCZ0.jpg?auto=webp&s=67d67b6139450853a4c674e61c335b453b02507f)
2025 Omega Speedmaster Professional Moonwatch ‘Silver Snoopy Award’ 50th 310.32.42.50.02.001 Complete Set Mint
The Omega Speedmaster Professional Moonwatch ‘Silver Snoopy Award’ 50th Anniversary celebrates Omega’s historic recognition from NASA astronauts for its role in the Apollo 13 mission.
- Condition: Mint
- Case size: 42mm diameter
- Straps included: bracelet and rubber straps
![[WTS] 2015 Omega Speedmaster Grey Side of Moon Platinum 311.93.44.51.99.001 Full Set](https://preview.redd.it/7980yf8ckulf1.jpg?width=640&crop=smart&auto=webp&s=cbe5e5196bf2b25a981b5f3e434cd407c8945327)
2015 Omega Speedmaster Grey Side of Moon Platinum 311.93.44.51.99.001 Full Set
This is a 2015 Omega Speedmaster Grey Side of Moon Platinum, featuring a grey ceramic case and a platinum dial.
- Condition: Very nice condition!
- Case material: Grey Ceramic
- Bezel material: Grey Ceramic Tachymeter Bezel
- Dial color: Platinum
![[WTS] 2023 Omega Speedmaster Hesalite $5250](https://preview.redd.it/w7zt9yaq7ulf1.jpg?width=640&crop=smart&auto=webp&s=176764be95773e484226ea17579f96395fbc4610)
2023 Omega Speedmaster Hesalite $5250
A 2023 Omega Speedmaster (Hesalite) in excellent condition, with a pristine bracelet and still under warranty. It was bought from a local AD in 2023 and only worn a handful of times.
- Condition: Excellent
- Year: 2023
- Warranty: 2+ years remaining
![[WTS] Omega Speedmaster Date 3210.52 - Casino Dial](https://preview.redd.it/sh7on6u91ulf1.jpg?width=640&crop=smart&auto=webp&s=b0501cd3224bdc19659aa1e864de853aa869508c)
Omega Speedmaster Date 3210.52 - Casino Dial
The Omega Speedmaster Date ref. 3210.52.00, nicknamed the 'Casino Dial', is a striking timepiece with red-and-black roulette-style subdials on a black dial.
- Condition: Excellent (light wear only)
- Case size: 40mm
- Movement type: automatic chronograph
- Crystal material: sapphire
![[WTS] Omega Speedmaster 38 324.30.38.50.01.001](https://preview.redd.it/4io6tn0sbtlf1.png?width=640&crop=smart&auto=webp&s=5037dc4c4164fcdcb4ac4abeb180e9c6b6029430)
Omega Speedmaster 38 324.30.38.50.01.001
A Omega Speedmaster 38 purchased in September 2023, with box and papers included.
- Origin: Goldsmiths
- Includes: box, papers, date change tool, instruction book, OMEGA outer box, Watches of Switzerland outer box
![[WTS] Horus Omega Fitted Rubber Straps - Speedmaster, Seamaster, etc](https://preview.redd.it/l4pnjd5q4tlf1.jpg?width=640&crop=smart&auto=webp&s=fa6e0385022084df517792b4fec590a2c4bd297a)
Horus Omega Fitted Rubber Straps - Speedmaster, Seamaster, etc
·
$35
Horus Omega Fitted Rubber Straps for Speedmaster and other modern Omega models are available for sale. These curved straps come in various colors and fit 20mm bands.
- Condition: Like New
- Colors: 10 different color options (Royal Blue, Light Blue, Lime Green, Red, Hot Pink, Pink, Orange, Yellow, Lavender, Gray)
![[WTS] Omega Speedmaster Reduced Date Annual Calendar Chronograph Silver Dial (Papers/Mint)](https://preview.redd.it/bsh7nvc4islf1.jpg?width=640&crop=smart&auto=webp&s=d909ace12109f5df8f6508b2d54a13b2379bb205)
Omega Speedmaster Reduced Date Annual Calendar Chronograph Silver Dial (Papers/Mint)
This Omega Speedmaster Reduced Triple Calendar Ref. 3521.30.00 is a compact and highly functional chronograph presented in all-original condition.
- Condition: Mint, minimal signs of wear
- Case size: 39mm diameter
- Bracelet length: up to 7.5 inches (19.5 cm)
- Movement tested: yes
![[WTS] Omega Speedmaster Professional Hesalite Sandwich Cal. 1863 3572.50 $4,250](https://preview.redd.it/gzzzqeh5prlf1.jpeg?auto=webp&s=15340b666cce436b9fa9f47c6fa7cdb18895bae0)