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

Reference IW5901-05

IWC Portugieser Constant-Force Tourbillon Double Moon Platinum / Silver

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

[WTS] IWC Portugieser Chronograph IW371624 Automatic Dune Dial 2024 41mm Full Set

IWC Portugieser Chronograph IW371624 Automatic Dune Dial 2024 41mm Full Set

IWC - IW371624 · $6,997
This pre-owned IWC Portugieser Chronograph features a stainless steel case with dune dial on black alligator strap and automatic movement.

  • Condition: Very good condition
  • Case size: 41mm diameter
  • Movement type: Automatic
Posted at
May 11, 2026, 8:52 AM
Active
View listing on r/WatchExchange
[WTS] IWC Portugieser Automatic (IW500109)

IWC Portugieser Automatic (IW500109)

IWC - IW500109 · $5,500
This IWC Portugieser Automatic is a discontinued reference featuring a black dial on a black leather strap, with a case size of 42mm and stainless steel construction. It comes with box, booklets, and warranty card dated January 2011.

  • Condition: very good
  • Case size: 42mm diameter
  • Case material: Stainless Steel
  • Bracelet material: Leather
Posted at
May 10, 2026, 11:45 AM
Active
View listing on r/WatchExchange
[WTS] IWC Portugieser Regulateur. IW544401. Box, Papers...

IWC Portugieser Regulateur. IW544401. Box, Papers...

IWC - IW544401 · $5,500
A IWC Portugieser Regulateur, a high-end watch with complex features.

  • Box: true
  • Papers: true
Posted at
May 9, 2026, 3:52 PM
Active
View listing on r/WatchExchange
[WTS] IWC Portugieser Chronograph IW371616

IWC Portugieser Chronograph IW371616

IWC - IW371616 · $7,100
For sale is a IWC Portugieser Chronograph IW371616 in excellent condition, featuring a red / burgundy sunburst dial. This watch is part of the modern Portugieser Chronograph lineup from IWC Schaffhausen and has a slim profile, balanced dial layout, and signature feuille hands.

  • Condition: Excellent
  • Case material: Stainless steel
  • Case size: 41mm
  • Dial color: Burgundy sunburst
Posted at
May 9, 2026, 2:06 PM
Active
View listing on r/WatchExchange
[WTS] 2022 IWC Portugieser Chronograph Green IW371615 41mm Full Set - $5,995

2022 IWC Portugieser Chronograph Green IW371615 41mm Full Set - $5,995

IWC - IW371615 · $5,995
This is a 2022 IWC Portugieser Chronograph Green, a 41mm watch with chronograph functionality.

  • Condition: Excellent condition with minimal signs of wear
  • Case size: 41mm diameter
  • Water resistance: 30m depth rating
Posted at
May 9, 2026, 11:22 AM
Active
View listing on r/WatchExchange
[WTS][US] IWC Portugieser Automatic 40 - Silver Dial - 40mm - IW358312 - BRAND NEW

[US] IWC Portugieser Automatic 40 - Silver Dial - 40mm - IW358312 - BRAND NEW

IWC - IW358312 · $6,950
This IWC Portugieser Automatic 40 features a silver dial and 40mm case. It is fully mechanical with no issues and includes various accessories.

  • Condition: Brand new, unworn
  • Case size: 40mm
  • Movement type: Automatic
Posted at
May 9, 2026, 7:23 AM
Active
View listing on r/WatchExchange
[WTS] 2022 IWC Portugieser Chronograph Green IW371615 41mm Full Set - $5,995

2022 IWC Portugieser Chronograph Green IW371615 41mm Full Set - $5,995

IWC - IW371615 · $5,995
This 2022 IWC Portugieser Chronograph Green features a 41mm case and is in excellent condition. It has been thoroughly tested on a timegrapher and is running well.

  • Condition: Excellent condition with minimal signs of wear
  • Year: 2022
  • Case Size: 41mm diameter
  • Contents: Watch, Box, Travel Case, International Warranty Card, Instructions Manual
Posted at
May 7, 2026, 11:51 AM
Active
View listing on r/WatchExchange
[WTS] IWC Portugieser Chronograph IW371624 Automatic Dune Dial 41mm Full Set

IWC Portugieser Chronograph IW371624 Automatic Dune Dial 41mm Full Set

IWC - IW371624 · $7,297
This is a pre-owned IWC Portugieser Chronograph with a stainless steel case, automatic movement, and dune dial on a black alligator strap. It's in very good condition with normal signs of wear.

  • Condition: Very good condition
  • Case size: 41mm
  • Case material: Stainless steel
Posted at
May 4, 2026, 10:21 AM
Active
View listing on r/WatchExchange
[WTS] IWC Portugieser Automatic (IW500109)

IWC Portugieser Automatic (IW500109)

IWC - IW500109 · $5,500
This IWC Portugieser Automatic features a black dial on a black leather strap, with a stainless steel case and automatic movement.

  • Condition: Very good condition
  • Case Size: 42mm diameter
  • Case Material: Stainless Steel
  • Bracelet Material: Leather
Posted at
May 3, 2026, 9:21 AM
Active
View listing on r/WatchExchange