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 Reduced 3510.50 Mint Full Set $3200](https://preview.redd.it/vjukp95ta4zg1.jpg?width=640&crop=smart&auto=webp&s=6fa8e3c8314eda947acf0d4e5bfd569a77bfeb99)
Omega Speedmaster Reduced 3510.50 Mint Full Set $3200
A beautiful Omega Speedmaster Reduced with a matte black Luminova dial, stainless steel case with twisted lugs, and an automatic Omega caliber 3220 movement.
- Condition: Mint
- Movement: Automatic Omega caliber 3220 (ETA 2890-2 with Dubois- Depraz chronograph module)
- Case size: 39mm diameter
- Bracelet type: Omega 1469
![[WTS][US] Omega Speedmaster Moonwatch Professional - Reverse Panda - 42mm - 310.30.42.50.01.004 - Full Set - BRAND NEW](https://preview.redd.it/fs51ja2jw3zg1.jpg?width=640&crop=smart&auto=webp&s=25435018ed32a721a76ea3c493a40595c0f76476)
[US] Omega Speedmaster Moonwatch Professional - Reverse Panda - 42mm - 310.30.42.50.01.004 - Full Set - BRAND NEW
This Omega Speedmaster Moonwatch Professional features a 42mm case and is in full set with its original box, papers, and accessories.
- Condition: Brand new, unworn, and in pristine condition
- Case size: 42mm diameter
- Movement type: mechanical
![[WTS] Nicest Example Out There??? Rare Vintage 18K Gold Omega Speedmaster “Tribute to Astronauts” Ref BA145.022 Unpolished Collector Grade!](https://preview.redd.it/zc595zr581zg1.jpg?width=640&crop=smart&auto=webp&s=07b84fbe0c8566df309bc4267066dc257fc99c68)
Nicest Example Out There??? Rare Vintage 18K Gold Omega Speedmaster “Tribute to Astronauts” Ref BA145.022 Unpolished Collector Grade!
This is a rare vintage 18K gold Omega Speedmaster 'Tribute to Astronauts' ref BA145.022 Unpolished Collector Grade watch, one of only 1014 made starting in November of 1969.
- Condition: Collector grade, unpolished all original with incredible patina forming on the gold
- Case size: 42mm
- Diameter: 42mm
- Bezel condition: Correct DON (dot over 90) maroon bezel with light wear mostly seen on the edge
![[WTS] Omega Speedmaster Reduced 3510.21 Limited Edition (2,000 Pcs) Marui 39mm , B&P - $5,550](https://preview.redd.it/2khclzy1o0zg1.jpg?width=640&crop=smart&auto=webp&s=da2cddd3b15449f4231f7ad42db0d0f3dec46f4a)
Omega Speedmaster Reduced 3510.21 Limited Edition (2,000 Pcs) Marui 39mm , B&P - $5,550
Up for sale is my Omega Speedmaster 3510.21, a limited edition watch with only 2,000 pieces produced. It measures 39mm and features an automatic movement.
- Condition: Very good condition
- Case size: 39mm diameter
- Movement type: Automatic
![[WTS] Omega Speedmaster Apollo 17](https://preview.redd.it/m5rp46v8d0zg1.jpg?width=640&crop=smart&auto=webp&s=60a69d792751363a88fbb56f22dfa1aa4868f2fb)
Omega Speedmaster Apollo 17
This is a rare Omega Speedmaster with only 1972 pieces ever made. It has no major marks, except for some scuffing on the AR.
- Condition: good
- Production Run: only 1972 pieces ever made
- Wrist Fits: 7.3 inches
![[WTS] Omega Speedmaster Reduced 3510.50 — 2002 Full Set](https://preview.redd.it/ckc7saaukzyg1.jpg?width=640&crop=smart&auto=webp&s=7fede2874178f1fe17b9741f6dd56dfd82bd61b6)
Omega Speedmaster Reduced 3510.50 — 2002 Full Set
- Condition: Full Set
![[WTS] Omega Speedmaster Professional Moonwatch Hesalite 3861 — 2022](https://preview.redd.it/w79cpyk5izyg1.jpg?width=640&crop=smart&auto=webp&s=d5ea5cbe779a01ea6575863f57a64f39fe537d92)
Omega Speedmaster Professional Moonwatch Hesalite 3861 — 2022
a luxury watch, Omega Speedmaster Professional Moonwatch Hesalite edition from 2022
- Year: 2022
![[WTS] Omega Speedmaster Moonphase 2024 Complete Set Blue Ceramic Mint Condition](https://preview.redd.it/h0btkpv5ryyg1.jpg?width=640&crop=smart&auto=webp&s=6637cc8d502bc1dd42e5d1f1532cb93e40abb158)
Omega Speedmaster Moonphase 2024 Complete Set Blue Ceramic Mint Condition
The Omega Speedmaster Moonphase is a modern execution of the flagship model, featuring full blue ceramic construction and a stunning dial. It's lightweight, technical, and visually unique in the Speedmaster lineup. The watch feels special on the wrist.
- Condition: Mint Condition
- Case material: Blue Ceramic
- Dial color: stunning
![[WTS] Omega Speedmaster Professional Moonwatch Ref: 311.30.42.30.01.005](https://preview.redd.it/kwvfm5ahjyyg1.jpg?width=640&crop=smart&auto=webp&s=a482a6f0f8e1439be6ba2e320be2980fdcd41b71)
Omega Speedmaster Professional Moonwatch Ref: 311.30.42.30.01.005
This 'Big Box' Collector's set has the classic Omega Speedmaster Professional Moonwatch with a 42mm case, Hesalite Crystal, and closed caseback.
- Condition: Very Good
- Case size: 42mm
- Movement: 1861 movement