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

Reference IW5901-08

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

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

Current Listings

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This IWC Portugieser Automatic 40 is a high-end mechanical watch with a silver dial and 40mm case. It's fully linked and comes with an extensive set of accessories. The watch functions perfectly mechanically and is in pristine condition.

Condition: Brand new, unworn
Case size: 40mm

Posted at

May 16, 2026, 7:40 AM

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IWC Portugieser Hand-Wound Eight Days Edition 150 Years - $5,000

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Up for sale is an IWC Portugieser Hand-Wound Eight Days Edition 150 Years, a dress watch that rarely gets worn.

Condition: 2 light marks on the case, clean crystal
Case condition: 2 light marks on the case
Crystal condition: clean
Included accessories: original boxes, original strap, extra blue alligator strap, documents

Posted at

May 15, 2026, 3:45 PM

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

IWC - IW371615 · $5,995

A 2022 IWC Portugieser Chronograph Green, a 41mm luxury watch featuring chronograph functionality.

Condition: Excellent condition with minimal signs of wear
Case Size: 41mm

Posted at

May 14, 2026, 12:47 PM

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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

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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

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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

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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

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