Omega Speedmaster Calibre 321 Professional Chronograph 42 Ref. 311.90.42.30.99.002
Omega Speedmaster Calibre 321 Professional Chronograph 42 Ref. 311.90.42.30.99.002 - Image 2
Omega Speedmaster Calibre 321 Professional Chronograph 42 Ref. 311.90.42.30.99.002 - Image 3
Omega Speedmaster Calibre 321 Professional Chronograph 42 Ref. 311.90.42.30.99.002 - Image 4
Omega Speedmaster Calibre 321 Professional Chronograph 42 Ref. 311.90.42.30.99.002 - Image 5
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Omega Speedmaster Calibre 321 Professional Chronograph 42 Ref. 311.90.42.30.99.002

Original price was: $582,00.Current price is: $466,00.

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Omega Speedmaster Calibre 321 Professional Chronograph 42 Ref. 311.90.42.30.99.002
Omega Speedmaster Calibre 321 Professional Chronograph 42 Ref. 311.90.42.30.99.002
$582,00 Original price was: $582,00.$466,00Current price is: $466,00.

Omega Speedmaster Calibre 321 Professional Chronograph 42 mm – Ref. 311.90.42.30.99.002

Overview

The Omega Speedmaster Calibre 321 Ref. 311.90.42.30.99.002 is the ultimate expression of the Moonwatch heritage, crafted in platinum Pt950Au20 with a distinctive onyx black dial featuring lunar meteorite subdials. Powered by the legendary Calibre 321, this timepiece fuses space history with haute horlogerie artistry.

Design & Materials

  • Case: 42 mm asymmetrical Professional case in platinum (Pt950Au20 alloy with 20% gold), with sapphire crystal and exhibition caseback.
  • Bezel: Black ceramic bezel with white enamel tachymeter scale, including the period-correct Dot Over 90 detail.
  • Dial: Black onyx step dial with three grey lunar meteorite subdials; applied Omega logo and hour markers in 18K white gold.
  • Bracelet: Platinum flat-link bracelet with folding clasp and fine adjustment system.
  • Crystal: Scratch-resistant sapphire, front and back.
  • Water Resistance: 50 meters (5 bar).

Movement

  • Caliber: Omega Calibre 321, manual-winding chronograph, column-wheel controlled.
  • Functions: Hours, minutes, small seconds; central chronograph seconds; 30-minute counter; 12-hour counter.
  • Frequency: 18,000 vph (2.5 Hz).
  • Power Reserve: Approximately 55 hours.
  • Decoration: Sedna gold PVD-coated bridges, visible through sapphire caseback.

Technical Specifications

  • Reference: 311.90.42.30.99.002
  • Collection: Speedmaster Professional
  • Case: Platinum Pt950Au20, 42 mm
  • Bezel: Black ceramic with white enamel tachymeter scale (DO90)
  • Dial: Onyx black step dial with lunar meteorite subdials
  • Bracelet: Platinum flat-link bracelet with folding clasp
  • Crystal: Sapphire crystal, front and exhibition caseback
  • Water Resistance: 50 meters / 167 feet
  • Movement: Calibre 321, manual-winding, ~55 hours power reserve
  • Condition: New / Unworn
  • Box & Papers: Omega presentation box and international warranty

Prestige & Value

The Speedmaster Calibre 321 Ref. 311.90.42.30.99.002 combines a historically faithful movement with precious-metal craftsmanship. Its onyx dial, meteorite subdials, and platinum construction make it a collector’s masterpiece—a Moonwatch redefined for connoisseurs of rarity and refinement.

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