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 Tropical Brown Dial Heavy Patina Blue Insert 1969 (Box/Serviced) 馃崼](https://preview.redd.it/i7kl1juty6dg1.jpg?width=640&crop=smart&auto=webp&s=1291e3cece3efd8651db15569222022fb0349ca6)
Omega Speedmaster Professional Moonwatch Tropical Brown Dial Heavy Patina Blue Insert 1969 (Box/Serviced) 馃崼
The Omega Speedmaster Moonwatch 145.022-69 features a super tropical brown dial with heavy yellow patina, a deep blue bezel, and tritium that glows green under UV light.
- Condition: Very rare and fully original, beautiful condition
- Case size: 42mm
- Year of production: 1969
- Movement serviced: November 2025
![[WTS] Omega Speedmaster white dial on bracelet with oem rubber included](https://preview.redd.it/fkhii9zx66dg1.jpg?width=640&crop=smart&auto=webp&s=6f83ecac21e5c8b2f98a563166077a59b1eeaf73)
Omega Speedmaster white dial on bracelet with oem rubber included
A white Omega Speedmaster on bracelet, sold in good condition with some minor cosmetic issues.
- Condition: Good condition with some swirls and light scratches (8.5/10)
- Box And Papers: Full kit
- Purchase Receipt: Original
![[WTS] Omega Speedmaster. Sapphire Sandwich. Automatic. Box, Papers.](https://preview.redd.it/k5o58bwiv5dg1.jpeg?auto=webp&s=ef0aca6d713a8c724c077e5bc61d4e4d2b23c659)
Omega Speedmaster. Sapphire Sandwich. Automatic. Box, Papers.
Omega Speedmaster, also known as the Sapphire Sandwich, is a high-end automatic watch that features strong lume.
- Water Resistance: 30m
- Box And Papers: true
![[WTS] Omega Speedmaster Sapphire](https://preview.redd.it/v8ad7gi6c4dg1.jpg?width=640&crop=smart&auto=webp&s=a9402943d151a9e869f7aee5782a75b4fd6ef125)
Omega Speedmaster Sapphire
A Omega Speedmaster Moonwatch listed for sale, stated to run great with excellent case condition.
- Condition: Excellent
- Case condition: Excellent
![[WTS] Omega Speedmaster Two Tone Reduced](https://preview.redd.it/pclpem5gt0dg1.jpg?width=640&crop=smart&auto=webp&s=fb3063421a0603b7613079522c3cfad2dee8739a)
Omega Speedmaster Two Tone Reduced
A rare two-tone Omega Speedmaster reduced, featuring a white dial and gold subdials, housed in an 18k gold bezel.
- Condition: Good, some wear on the case and bezel
- Movement: Cal 1140
- Size: 39mm diameter
![[WTS] Omega Speedmaster Racing Chronograph Silver Dial Watch 326.30.40.50.02.001 Complete Set](https://preview.redd.it/eb41aecaa0dg1.jpeg?auto=webp&s=739a896507fd4d53fb7b2a24eb92bef7e811b0bf)
Omega Speedmaster Racing Chronograph Silver Dial Watch 326.30.40.50.02.001 Complete Set
The Omega Speedmaster Racing features a striking silver white dial with bold chronograph hands and counters, paired with a stainless steel case and bracelet for a timeless design with modern presence.
- Condition: Excellent
- Case material: stainless steel
- Bracelet type: bracelet
- Movement type: chronograph movement
![[WTS] Omega Speedmaster Moonwatch Professional 310.30.42.50.01.002 "Sapphire Sandwich."](https://preview.redd.it/l0rgeiqlpzcg1.jpeg?auto=webp&s=64f4935e96ce5b48ecdb0dd80aa20993ecb26e0c)
Omega Speedmaster Moonwatch Professional 310.30.42.50.01.002 "Sapphire Sandwich."
The Omega Speedmaster Moonwatch Professional, also known as the 'Sapphire Sandwich', is a modern iteration of the timepiece that went to the moon. It features a sapphire crystal front and caseback, redesigned bracelet, and Co-Axial Master Chronometer movement.
- Condition: Excellent
- Case material: Sapphire crystal front and caseback
- Bracelet condition: Excellent
- Movement: Co-Axial Master Chronometer
![[WTS] LNIB 3 Month Old Omega Speedmaster Pro Sapphire](https://preview.redd.it/iq2qh7osgzcg1.jpg?width=640&crop=smart&auto=webp&s=6c41b07ae58ded932de92302d4a5ca4ceb37f471)
LNIB 3 Month Old Omega Speedmaster Pro Sapphire
This listing is for a new Omega Speedmaster Pro Sapphire Sandwhich watch. It has been worn for only three months and shows no signs of wear or scratches, with all original packaging and accessories included.
- Condition: New condition, lightly used for 3 months
- Age: 3 months old
- Size: Assuming standard watch size (no specific details given)
![[WTS] Omega Speedmaster Dark Side of the Moon 311.92.44.30.01.001 | Ceramic |FULL SET](https://preview.redd.it/odozlf1k2zcg1.jpg?width=640&crop=smart&auto=webp&s=cafdce6f1fe6b22dc05215e7798d1a696f97ee2a)
Omega Speedmaster Dark Side of the Moon 311.92.44.30.01.001 | Ceramic |FULL SET
Additional Details: Omega SpeedMaster Dark Side of the Moon with a full-ceramic case and buckle.
- Condition: Mint, like-new
- Case material: full ceramic
- Year: 2019