Omega Speedmaster Speedmaster Professional Moonphase / Strap
Reference 3876.50.31
About this watch
The Omega Speedmaster Professional Moonphase is an exquisite blend of precision, technology, and style, boasting a storied history in horology. With its classic yet sporty design, this watch exudes sophistication, featuring a black dial highlighted by the stainless steel case. The stick and dot indexes provide excellent visibility, while the moonphase complication adds a touch of elegance to its sporty demeanor. At its heart lies the Omega caliber 1866, a handwound chronograph movement renowned for precision and reliability. With a power reserve of 45 hours, it's designed to withstand daily wear and tear, making it an excellent choice for both men and women. The watch's durability is further enhanced by its sapphire crystal, ensuring that the beauty of the dial remains unblemished over time. Water-resistant up to 50 meters, this watch is suitable for splashes and brief immersions in water. Whether you're a collector, space enthusiast, or simply looking for a reliable timepiece, the Speedmaster Professional Moonphase ticks all the boxes, offering a perfect blend of functionality, style, and history.
Key Features
- Omega Caliber 1866 Handwound Chronograph Movement
- 42mm Stainless Steel Case with Tachymeter Bezel
- Sapphire Crystal for Scratch-Resistant Durability
Specifications
- Brand
- Omega
- Family
- Speedmaster
- Model
- Speedmaster Professional Moonphase / Strap
- Reference
- 3876.50.31
- Movement
- 1866
- Movement Features
-
- Hours, Minutes, Small Seconds
- Date
- Chronograph
- Moonphase
- Case
- Stainless Steel 42mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 50
Current Listings
![[WTS] Omega Speedmaster 3523.80 39mm - $1,750](https://preview.redd.it/8p0ncarn3v0h1.jpg?width=640&crop=smart&auto=webp&s=b1e628872454f4e7ea80f4f2bf90b5116ef7cc4b)
Omega Speedmaster 3523.80 39mm - $1,750
Up for sale is my Omega Speedmaster 3523.80 39mm, an automatic caliber Omega 1151 movement in a steel case on original Omega steel bracelet.
- Condition: Great condition with minimal hairlines/marks on case, caseback, and bracelet
- Caliber: Omega 1151 movement
- Case size: 39mm diameter
- Bracelet length adjustment: up to 7-7.25 inch wrists
![[WTS] Omega. Speedmaster. Reverse Panda. Box and Papers. $1999 Massive Reduction!!](https://preview.redd.it/pz9muelf2t0h1.png?auto=webp&s=098429d433f7477a5b1620f475d99166a24705a1)
Omega. Speedmaster. Reverse Panda. Box and Papers. $1999 Massive Reduction!!
This Omega Speedmaster Reverse Panda is a high-end watch featuring a unique reverse panda dial. It comes complete with its original box, papers, and warranty.
- Condition: 7.75/10, has wear around bezel and some flea bites on crystal
- Bracelet length: ~20 links to fit 7inch wrist
- Condition rating: 7.75/10
![[WTS] Omega Speedmaster 18mm Bracelet Only OEM](https://preview.redd.it/udpx3llh9s0h1.jpg?width=640&crop=smart&auto=webp&s=72f7af183403415dadca8f195a1e6f5021e1c004)
Omega Speedmaster 18mm Bracelet Only OEM
This listing is for an Authentic Omega 18mm bracelet from a Speedmaster date 3513.50, suitable for small to medium sized wrists.
- Bracelet type: OEM
- Links: 19 links
- Wrist size range: small to medium
![[WTS] 2026 New White Omega Speedmaster, $8k](https://preview.redd.it/sxkoh8paor0h1.jpeg?auto=webp&s=b2b8b13418cb974a3f961742dec078e507d55d2d)
2026 New White Omega Speedmaster, $8k
2026 New White Omega Speedmaster for sale. Additional details can be found at the provided Imgur link.
- Year: 2026
- Color: white
![[WTS] Omega Speedmaster Darkside of the Moon 311.92.44.51.01.005](https://preview.redd.it/8l0i5kuyor0h1.jpg?width=640&crop=smart&auto=webp&s=c5b931f175f605f0613463fd9845b9653bce1d3d)
Omega Speedmaster Darkside of the Moon 311.92.44.51.01.005
For sale is a Omega Speedmaster Dark Side of the Moon, which comes in pristine condition as shown in the pics.
- Condition: mint condition
- Box and papers: included
- Cards: none available
![[WTS] Omega Speedmaster Date 3511.80.00 – Metallic Blue Dial 39mm – Fresh Service – $1,999 Shipped](https://preview.redd.it/82mnvvlltq0h1.jpg?width=640&crop=smart&auto=webp&s=f7d9a66460c413212138fd12bffe8a6d294f9010)
Omega Speedmaster Date 3511.80.00 – Metallic Blue Dial 39mm – Fresh Service – $1,999 Shipped
This Omega Speedmaster Date features a striking metallic blue sunburst dial and a sportier take on the traditional Moonwatch aesthetic.
- Condition: Very good, honest signs of wear consistent with age
- Case size (excluding crown): 39mm
- Lug-to-lug: 45mm
- Thickness: 14mm
![[WTS] Omega Speedmaster Triple Date 3523.30.00 Silver Dial 39mm – $2,299 Shipped](https://preview.redd.it/p20pmqn4nq0h1.jpg?width=640&crop=smart&auto=webp&s=64c076af22d9fe9c0efb5687ddc9da626def6735)
Omega Speedmaster Triple Date 3523.30.00 Silver Dial 39mm – $2,299 Shipped
This Omega Speedmaster Triple Date ref. 3523.30.00 combines classic Speedmaster DNA with a practical full calendar layout featuring day, date, month, chronograph, and 24-hour indicator in a compact case.
- Condition: Very attractive condition
- Case Size: 39mm (excluding crown)
- Lug To Lug: 44mm
- Thickness: 14mm
![[WTS] Omega Speedmaster Marui Panda 3510.21.00 – Full Set – Fresh Service – JDM Limited Edition of 2000pcs – $5,799 Shipped](https://preview.redd.it/h835q824fq0h1.jpg?width=640&crop=smart&auto=webp&s=4123e707338dec78443135956ae0990599b0e042)
Omega Speedmaster Marui Panda 3510.21.00 – Full Set – Fresh Service – JDM Limited Edition of 2000pcs – $5,799 Shipped
This Omega Speedmaster Marui Panda is a highly collectible JDM limited edition with a unique white 'Panda' dial and deep black subdials. It features a 39mm case size, lug-to-lug measurement of 44mm, thickness of 12mm, and lug width of 18mm.
- Condition: Very attractive condition, strong lines and honest signs of careful wear throughout
- Movement: Omega Cal. 3220 automatic chronograph
- Case size: 39mm (excluding crown)
- Lug-to-lug: 44mm
![[WTS] Collection Sell Off: OMEGA Speedmaster, WISE ADX GMT, Grand Seiko EVO9 Atera Valley, Seiko Speedtimer, CASIO G-Shock MRG](https://preview.redd.it/zpd37ibfeq0h1.jpg?width=640&crop=smart&auto=webp&s=9aa1937305f1d08a1c8c4dc6d2cc5895a120269e)
Collection Sell Off: OMEGA Speedmaster, WISE ADX GMT, Grand Seiko EVO9 Atera Valley, Seiko Speedtimer, CASIO G-Shock MRG
The seller is listing an OMEGA Speedmaster 3861 Sapphire Sandwich watch, which is in very good condition and running beautifully. It comes with a Forstner Bullet Bracelet.