IWC Portugieser Portugieser Constant-Force Tourbillon Double Moon Red Gold / Silver

Reference IW5901-08

About this watch

The IWC Portugieser Constant-Force Tourbillon Double Moon IW5901-08 is a masterpiece of horological excellence. Its luxurious red gold case and stunning silver sunburst dial make a statement. The round shape and 46 mm diameter provide a bold presence on the wrist, balancing elegance and masculinity. The hand-wound IWC caliber 94800 showcases IWC's engineering prowess with its integrated constant force mechanism and mesmerizing 1-second jumps of the tourbillon. This exceptional timepiece performs with consistency, even as the power reserve dwindles. With a 96-hour power reserve, thoughtful features like the power reserve indicator ensure you're never caught off guard by a stopped watch. The double moonphase display is where this watch really shines, showing the current phase of the moon and its position in relation to the other celestial body. It's an astrological companion that invites conversation and wonder.
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Key Features

  • Red gold case
  • Sapphire glass
  • IWC Caliber 94800 movement
  • 96-hour power reserve
  • 30m water resistance
  • Limited edition of 1 unit
  • Double moonphase display

Specifications

Brand
IWC
Family
Portugieser
Model
Portugieser Constant-Force Tourbillon Double Moon Red Gold / Silver
Reference
IW5901-08
Movement
94800
Movement Features
  • Minutes, Hours, Small Seconds
  • Moonphase
  • Constant Force Mechanism, Tourbillon Escapement, Power Reserve Indicator
Case
Red Gold 46mm
Dial Color
Silver
Crystal
Sapphire
Water Resistance
30

Current Listings

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  • Condition: Brand new, unworn, pristine condition
  • Case diameter: 40mm
Posted at
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Active
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  • Condition: Overall very good vintage condition, minor scuffing around the ~10 o'clock area on the crystal
  • Case Size: ~42 mm
  • Diameter: ~42 mm
  • Movement: IWC Caliber 9828, manual wind
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Apr 28, 2026, 9:28 PM
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A beautiful summer timepiece by IWC, the Portugieser Yacht Club Chronograph Edition 'Orlebar Brown' has a fresh and crisp aesthetic while maintaining its classic iconic design.

  • Condition: great preowned condition with minor signs of wear throughout the case, caseback, case sides, bracelet, and clasp
  • Year: 2020
  • Case size: 44mm
  • Crystal type: sapphire
Posted at
Apr 27, 2026, 7:20 PM
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  • Condition: Very good
  • Case size: 41 mm
  • Case material: Stainless steel
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Apr 27, 2026, 9:52 AM
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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
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Apr 2, 2025, 3:10 PM
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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
Posted at
Mar 7, 2025, 10:20 AM
Active
Reduced! IWC Portugieser Chronograph - 18k Rose Gold

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The IWC Portugieser Chronograph is an icon of watchmaking. This timeless design, with its perfect proportions and understated elegance, has captivated collectors worldwide.

  • Condition: Excellent
  • Case material: 18k solid rose gold
  • Bracelet type: Original IWC Leather Strap
Posted at
Mar 1, 2025, 9:09 PM
Active