IWC Portugieser Portugieser Constant-Force Tourbillon Double Moon Platinum / Silver

Reference IW5901-05

About this watch

The IWC IW5901-05 Portugieser Constant-Force Tourbillon Double Moon Platinum / Silver is a masterpiece of horology, blending art and science in a stunning limited edition timepiece. At its core is the IWC caliber 94800, a hand-wound movement with a patented constant force mechanism that ensures perfect balance. This tourbillon escapement counteracts gravity's effects on accuracy, making it a marvel of precision engineering. The platinum case and sunburst silver finish exude luxury, while the sapphire glass and open back design showcase the craftsmanship that went into creating this masterpiece. With a power reserve of 96 hours and water resistance of 30 meters, this watch is both functional and durable. Its double moonphase display serves as a decorative element and functional tool for astronomy enthusiasts and stargazers alike. As a limited edition with only 5 units produced, the IW5901-05 is a true collector's item that embodies artistry and engineering excellence.
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Key Features

  • IWC Caliber 94800 Hand-Wound Movement
  • Patented Constant Force Mechanism
  • Tourbillon Escapement
  • Double Moonphase Display
  • 96-Hour Power Reserve
  • 30-Meter Water Resistance
  • Platinum Case with Sunburst Silver Finish

Specifications

Brand
IWC
Family
Portugieser
Model
Portugieser Constant-Force Tourbillon Double Moon Platinum / Silver
Reference
IW5901-05
Movement
94800
Movement Features
  • Minutes, Hours, Small Seconds
  • Moonphase
  • Constant Force Mechanism, Tourbillon Escapement, Power Reserve Indicator
Case
46mm
Dial Color
Silver
Crystal
Sapphire
Water Resistance
30

Current Listings

IWC Portugieser Chronograph - 41mm - Blue Numerals - IW371605 ( new / 2025 )

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This IWC Portugieser Chronograph features a 41mm stainless steel case, in-house Calibre 69355 movement, and a silver dial with blue numerals. The watch comes complete with all boxes, papers, booklets, and an IWC Warranty Card dated May 2025.

  • Condition: Unworn
  • Case size: 41mm diameter
  • Movement type: In-House Calibre 69355
Posted at
May 2, 2025, 3:23 PM
Active
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This IWC Portugieser Chronograph features a stainless steel case and gold numerals. It comes with all the original boxes, papers, booklets, and IWC Warranty Card.

  • Condition: unworn
  • Case size: 41mm diameter
  • Movement: In-House Calibre 69355
Posted at
Apr 2, 2025, 3:10 PM
Active
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  • Condition: Very Good Condition
  • Boxes: Yes, complete set
  • Papers: Complete
  • Warranty: With warranty card
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  • Band material: leather
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  • Condition: 90%
  • Size: 43mm diameter
  • Case material: 18K Rose Gold
  • Limited edition: 1000 pieces
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Mar 7, 2025, 10:20 AM
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Reduced! IWC Portugieser Chronograph - 18k Rose Gold

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  • Condition: Excellent
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  • Bracelet type: Original IWC Leather Strap
Posted at
Mar 1, 2025, 9:09 PM
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The IWC Portugieser Minute Repeater is a brilliant invention from the 17th century, featuring a sonorous minute repeating mechanism that chimes out the hours, quarters and minutes on two finely tuned gongs. The watch has a grey dial and is housed in an 18k white gold case with a diameter of 43mm.

  • Condition: Excellent to Like New
  • Case size: 43mm
  • Water resistance: 0.0 bar
  • Movement caliber: 95290
Posted at
Feb 24, 2025, 6:29 PM
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IWC Portugieser Chronograph - 18k Rose Gold

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The IWC Portugieser Chronograph is an icon of watchmaking with a timeless design and understated elegance. This 18k solid rose gold version offers a significant increase in luxury and exclusivity.

  • Condition: Excellent
  • Case material: 18k solid rose gold
  • Band: Original IWC Leather Strap with 18k RG Tang Buckle
Posted at
Feb 20, 2025, 10:07 PM
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  • Condition: 95%
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  • Movement Type: Mechanical Manual
Posted at
Feb 19, 2025, 3:22 PM
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