Omega Speedmaster Speedmaster Professional Moonwatch 321 Platinum / Black / Alligator

Reference 311.93.42.30.99.001

About this watch

The Omega Speedmaster Professional Moonwatch 321 Platinum is a stunning tribute to the brand's rich legacy of space exploration. With its platinum case, chronograph movement, and luxurious materials, this watch demands attention without being overly ostentatious. The black onyx dial adds depth, while the stick and dot indexes stand out beautifully. At the core is the Omega caliber 321 B, a hand-wound marvel that pays homage to original Speedmaster movements. With a power reserve of 55 hours and a frequency of 18,000 vibrations per hour, it ensures precision and reliability. The chronograph feature operates through pushers on the side of the watch, engaging the timing mechanism. This timepiece is a celebration of engineering, design, and the spirit of exploration. Its timeless elegance and advanced functionality make it a worthy addition to any watch collection.
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Key Features

  • Platinum case with 42mm diameter
  • Omega caliber 321 B hand-wound movement
  • Chronograph feature with column wheel mechanism
  • Water resistance up to 50 meters
  • Black onyx dial with stick and dot indexes
  • Alligator leather strap for comfort and style

Specifications

Brand
Omega
Family
Speedmaster
Model
Speedmaster Professional Moonwatch 321 Platinum / Black / Alligator
Reference
311.93.42.30.99.001
Movement
321-b
Movement Features
  • Small Seconds, Hours, Minutes
  • Chronograph, Column wheel
Case
42mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
50

Current Listings

[WTS] Omega Speedmaster. 39mm. Special Dial.

Omega Speedmaster. 39mm. Special Dial.

Omega - Speedmaster · $2,200
A 39mm Omega Speedmaster with a special dial is being sold. The watch features an automatic movement and has been listed for sale.

  • Diameter: 39mm
  • Movement type: automatic
Posted at
May 9, 2026, 4:28 PM
Active
[WTS] Omega Speedmaster Broadarrow. Strong Lume.

Omega Speedmaster Broadarrow. Strong Lume.

This Omega Speedmaster Broadarrow features strong lume and runs well.

  • Condition: Runs well
  • Shipping: Fedex with insurance
  • Location: NJ USA
  • References: 800+ references
Posted at
May 9, 2026, 3:40 PM
Active
[WTS] Omega Speedmaster Tokyo Gold Green 522.20.42.30.06.001

Omega Speedmaster Tokyo Gold Green 522.20.42.30.06.001

Omega Speedmaster Tokyo Gold Green in mint condition, complete with original boxes and papers.

  • Condition: Mint condition with minor wear on the bracelet
  • Bracelet state: has all stickers
  • Extra strap included: yes
  • Strap type: crocodile leather
Posted at
May 9, 2026, 1:59 PM
Active
[WTS] Omega Speedmaster Reduced Sapphire Crystal 3539.50 39mm $2,900

Omega Speedmaster Reduced Sapphire Crystal 3539.50 39mm $2,900

Omega - 3539.50 · $2,900
This Omega Speedmaster Reduced is a 39mm watch recently serviced by a professional watchmaker and features a sapphire crystal.

  • Condition: Used, with minor cosmetic damage (nicks around the bezel)
  • Case Size: 39mm
  • Bracelet Length: 18.5cm
Posted at
May 9, 2026, 1:58 PM
Active
[WTS] 2005 Omega Speedmaster Professional "Sapphire Sandwich" Ref. 3573.50 Watch + Card and Tag - $4,800

2005 Omega Speedmaster Professional "Sapphire Sandwich" Ref. 3573.50 Watch + Card and Tag - $4,800

Omega - 3573.50 · $4,800
This Omega Speedmaster Professional Moonwatch is a stainless steel watch with a sapphire crystal and an Omega 1863 movement, featuring a 42mm diameter case.

  • Condition: Good
  • Case material: Stainless steel
  • Crystal material: Sapphire
  • Movement: Omega 1863
Posted at
May 9, 2026, 12:22 PM
Active
[WTS] 2020 Omega Speedmaster Moonphase Black 304.30.44.52.01.001 Full Set - $7,995

2020 Omega Speedmaster Moonphase Black 304.30.44.52.01.001 Full Set - $7,995

A 2020 Omega Speedmaster Moonphase Black, in excellent condition with minimal signs of wear, featuring a moon phase function and a sleek black design.

  • Condition: Excellent condition with minimal signs of wear
  • Year: 2020
  • Contents: Watch, Inner & Outer Box, Card Holder, International Warranty Card, Pictograms Card, Master Chronometer Card, Instructions Manual
Posted at
May 9, 2026, 11:28 AM
Active
[WTS] Omega Speedmaster Reduced (automatic)

Omega Speedmaster Reduced (automatic)

A beautiful Omega Speedmaster Automatic in good condition, featuring the iconic Speedmaster design in a more wearable 38mm automatic configuration.

  • Condition: Good overall condition for its age, normal signs of wear consistent with age
  • Movement: Automatic chronograph movement
  • Case Material: Stainless steel
  • Crystal: Hesalite
Posted at
May 9, 2026, 9:57 AM
Active
[WTS] UNWORN Omega Speedmaster ’57 Master Chronometer – BOX & PAPERS – 332.10.41.51.01.001

UNWORN Omega Speedmaster ’57 Master Chronometer – BOX & PAPERS – 332.10.41.51.01.001

  • Condition: Unworn
  • Movement: Manual-wind Cal 9906
  • Case material: Stainless-steel
  • Case diameter: 40.5mm
Posted at
May 9, 2026, 8:58 AM
Active
[WTS] 2026 Omega Speedmaster Professional White Dial 310.32.42.50.04.002 Full Set $7,250

2026 Omega Speedmaster Professional White Dial 310.32.42.50.04.002 Full Set $7,250

A modern Moonwatch configuration featuring a lacquered white dial paired with a strap setup, delivering a clean and high-contrast look while maintaining the iconic Speedmaster design.

  • Condition: Like new
  • Case Size: 42mm diameter
  • Case Material: Stainless steel
  • Movement: Manual wind (Omega Calibre 3861 Master Chronometer)
Posted at
May 8, 2026, 9:34 PM
Active