Omega Speedmaster Speedmaster Professional Moonwatch Plexi / See-Through / Leather

Reference 3872.50.01

About this watch

The Omega Speedmaster Professional Moonwatch Plexi is a stunning celebration of design, functionality, and history. Its sleek stainless-steel case, measuring 42mm in diameter, strikes a perfect balance between elegance and masculinity. The black dial with stick and dot indexes is both stylish and functional, while the tachymeter bezel adds a sporty touch. The open case back showcases the intricate workings of the Omega caliber 1863 movement, allowing watch enthusiasts to appreciate the craftsmanship that goes into each timepiece. This hand-wound chronograph features 18 jewels and boasts a power reserve of 48 hours, delivering accurate timekeeping with its frequency of 21,600 vibrations per hour. The chronograph functionality is where this watch truly shines, allowing you to measure elapsed time with precision. With a water resistance of 50 meters, the Omega Speedmaster Professional Moonwatch can handle splashes and brief immersions. Its rich history adds a layer of nostalgia and significance to the watch, making it not just a fashion statement but also a smart investment. Whether you're a seasoned collector or a first-time buyer, this watch offers something special for everyone.
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Key Features

  • Omega caliber 1863 movement
  • Hand-wound chronograph with 18 jewels
  • 48-hour power reserve
  • Tachymeter bezel
  • Plexiglass crystal
  • Open case back
  • 50-meter water resistance

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch Plexi / See-Through / Leather
Reference
3872.50.01
Movement
1863
Movement Features
  • Hours, Minutes, Small Seconds
  • Chronograph
Case
Stainless Steel 42mm
Dial Color
Black
Crystal
Plexi
Water Resistance
50

Current Listings

[WTS] Omega Speedmaster Moonphase | Ref. 304.33.44.52.03.001 | 2024 | Complete Set Mint | $7,399 Shipped

Omega Speedmaster Moonphase | Ref. 304.33.44.52.03.001 | 2024 | Complete Set Mint | $7,399 Shipped

The Omega Speedmaster Moonphase combines the classic Moonwatch design language with added complications and a stunning blue colorway, featuring a chronograph, moonphase display at 6 o'clock, pointer date subdial at 9 o'clock, powered by Co-Axial Master Chronometer movement.

  • Condition: Excellent overall
  • Case size: 44.25mm diameter
  • Movement: Co-Axial Master Chronometer movement
  • Complications: chronograph, moonphase display, pointer date subdial
Posted at
Jan 10, 2026, 8:06 PM
Active
[WTS] Excellent Omega Speedmaster Broad Arrow Co-Axial GMT Mens Watch $2750

Excellent Omega Speedmaster Broad Arrow Co-Axial GMT Mens Watch $2750

This Omega Speedmaster Broad Arrow Co-Axial GMT is a high-quality watch featuring an automatic movement and stainless steel case. It measures 44mm in width, making it suitable for larger wrists.

  • Condition: Pre-owned
  • Case width: 44mm (without crown)
  • Band size: fits up to approx 20cm
  • Movement: automatic 3603
Posted at
Jan 10, 2026, 8:01 PM
Active
[WTS] 2024 Omega Speedmaster Moonwatch White Dial 42 310.30.42.50.04.001

2024 Omega Speedmaster Moonwatch White Dial 42 310.30.42.50.04.001

Omega - 31030425004001 · $7,350
This watch is a 2024 Omega Speedmaster Moonwatch with a white dial, coming as a full set with card dated 2024 and in good pre-owned condition.

  • Condition: pre-owned
  • Year Of Manufacture: 2024
  • Diameter: 42mm
Posted at
Jan 10, 2026, 10:30 AM
Active
[WTS] 2023 Omega Speedmaster Silver Snoopy Award on Bracelet + Straps Full Set Mint Condition

2023 Omega Speedmaster Silver Snoopy Award on Bracelet + Straps Full Set Mint Condition

Omega - 310.32.42.50.02.001 · $15,999
This is a 2023 Omega Speedmaster Silver Snoopy Award on Bracelet + Straps Full Set in mint condition.

  • Condition: Mint Condition, like new preowned
  • Size: 40mm diameter
  • Depth Rating: 50m water resistance
  • Case Material: Stainless Steel
Posted at
Jan 9, 2026, 11:43 PM
Active
[WTS] Omega Speedmaster Black Fabric Strap

Omega Speedmaster Black Fabric Strap

Omega - CWZ014117 · $240
Up for sale is my Omega Speedmaster black fabric strap, ref. CWZ014117, which has never been worn.

  • Condition: Like new
  • Strap Type: Black fabric strap
  • Includes Accessories: No deployant or spring bars included
Posted at
Jan 9, 2026, 11:11 PM
Active
[WTS] 1991 Omega Speedmaster Moonwatch Ref 3590.50 with abstract

1991 Omega Speedmaster Moonwatch Ref 3590.50 with abstract

Omega - 3590.50 · $4,000
This 1991 Omega Speedmaster Moonwatch is in excellent condition with an original tritium dial and hands, and a correct Omega hesalite crystal.

  • Condition: Excellent vintage condition, unpolished
  • Serial number: 482774XX
  • Movement: caliber 861
  • Bracelet size: 1479/812, currently sized for a 6.8" wrist
Posted at
Jan 9, 2026, 5:57 PM
Active
[WTS] Omega Speedmaster Reduced — $2500 USD

Omega Speedmaster Reduced — $2500 USD

Omega - 3510.50 · $2,500
For sale is my Omega Speedmaster Reduced with a 39mm case size and automatic movement.

  • Condition: Excellent
  • Case Size: 39mm
  • Movement Type: Automatic
Posted at
Jan 9, 2026, 5:55 PM
Active
[WTS] Omega Speedmaster Reduced, ref. 175.0032.1, Factory Service Papers, Box, Accessories

Omega Speedmaster Reduced, ref. 175.0032.1, Factory Service Papers, Box, Accessories

Omega - 175.0032.1 · $2,700
The Omega Speedmaster Reduced is a beautiful watch in excellent condition, with factory service papers and box included.

  • Condition: Excellent
  • Service cost: $850
  • Year of service: 2019
Posted at
Jan 9, 2026, 5:34 PM
Active