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

Reference IW5901-03

IWC Portugieser Constant-Force Tourbillon Double Moon Platinum / Blue

About this watch

The IWC Portugieser Constant-Force Tourbillon Double Moon is a masterclass in horological innovation, showcasing IWC's commitment to precision engineering and timeless design. The platinum case exudes opulence with its 46mm diameter and 13.40mm height, while the sunburst blue dial radiates elegance and makes time-telling effortless. A robust sapphire crystal protects the watch, ensuring a scratch-resistant finish that shines brightly in varying lighting conditions. Powered by the IWC-manufactured caliber 94800, this hand-wound movement is a testament to horological excellence, featuring a patented constant force mechanism and tourbillon escapement for improved accuracy and performance. The IW5901-03 boasts an impressive power reserve indicator, double moonphase display, and day/night indication feature, making it a truly unique timepiece that combines beauty and functionality.

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Key Features

46mm platinum case
IWC-manufactured caliber 94800 movement
Patented constant force mechanism
Tourbillon escapement
96-hour power reserve
Double moonphase display
Day/night indication feature

Specifications

Brand

IWC

Family

Portugieser

Model

Portugieser Constant-Force Tourbillon Double Moon Platinum / Blue

Reference

IW5901-03

Movement

94800

Movement Features

Minutes, Hours, Small Seconds
Moonphase
Constant Force Mechanism, Tourbillon Escapement, Power Reserve Indicator

Case

46mm

Dial Color

Blue

Crystal

Sapphire

Water Resistance

Current Listings

IWC Portugieser Automatic 40 - Silver Dial - 40mm - IW358312 - BRAND NEW

IWC - IW358312 · $7,125

This is an IWC Portugieser Automatic 40 with a silver dial and 40mm case size. It's brand new and functions perfectly mechanically.

Condition: Brand new, unworn
Case diameter: 40mm

Posted at

Mar 21, 2026, 11:52 AM

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IWC Portugieser Chronograph IW371417 – Box & Papers – Automatic – Excellent Condition

IWC - IW371417 · $4,850

A clean example of the IWC Portugieser Chronograph IW371417, featuring a classic silver dial with Arabic numerals and blued hands. This is one of IWC’s most recognizable and wearable chronographs, offering a refined profile with strong everyday versatility.

Condition: Excellent
Case Size: 41mm diameter
Movement: Cal. 79350 automatic movement
Case Material: Stainless Steel

Posted at

Mar 18, 2026, 10:09 PM

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IWC Portugieser Chronograph Rattrapante “Edition Boutique Canada” – Ref. IW371220 – #027/150 – Full Set

IWC - IW371220 · $8,000

This is a rare IWC Portugieser Chronograph Rattrapante, one of only 150 pieces produced for the Edition Boutique Canada. It features a rattrapante complication, allowing two simultaneous elapsed times to be measured independently.

Condition: Excellent, lightly worn
Movement: IWC Caliber 76240, hand-wound rattrapante chronograph
Case size: 40.9mm diameter
Water resistance: 30m depth rating

Posted at

Mar 15, 2026, 6:08 PM

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2023 IWC Portugieser Automatic 40 IW358312 Full Set Excellent

IWC - IW358312 · $6,597

A refined, modern interpretation of the classic Portugieser design.

Condition: Excellent
Year: 2023
Contents: Full Set

Posted at

Mar 14, 2026, 3:04 PM

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IWC Portugieser Automatic 40 - Silver Dial - 40mm - IW358312 - BRAND NEW

IWC - IW358312 · $7,150

This IWC Portugieser Automatic is a brand new watch with a silver dial and 40mm case size. It features a mechanical movement and includes a full set of accessories.

Condition: Brand new, unworn, pristine condition
Case diameter: 40mm

Posted at

Mar 14, 2026, 11:29 AM

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IWC 1993 Portugieser Jubilee Ref. 5441 — 18k Rose Gold — Limited Edition

IWC - 5441 · $15,249

This 1993 IWC Portugieser Jubilee Ref. 5441 is a historically significant limited edition watch produced in 18k rose gold to celebrate International Watch Company's 125th anniversary.

Condition: Very good, minor scuffing around the 10 o'clock area on the crystal
Case size: ~42mm diameter
Dial material: silver
Movement type: manual-winding

Posted at

Mar 13, 2026, 7:13 PM

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IWC Portugieser Automatic 40.4mm - Full Set - Warranty to 2030

IWC - IW358304 · $5,300

The Portugieser Automatic has a classic dial design and ergonomically optimized strap horns for greater comfort, available in a 40.4mm stainless steel case with a silver-plated dial and blue tone appliqués.

Case Size: 40.4mm
Movement: IWC-manufactured 82200-calibre

Posted at

Mar 13, 2026, 10:35 AM

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IWC Portugieser - Mint Condition - 2025 Release

IWC - Portugieser IW501705 · $8,350

This IWC Portugieser is a stunning watch with a new dial manufacturing method. It's 42mm in size and has a 7-day automatic movement.

Condition: Like-new
Case size: 42.4 mm diameter
Thickness: 12.9 mm height
Movement: IWC Calibre 52011 Automatic

Posted at

Mar 10, 2026, 11:03 AM

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IWC Portugieser Chronograph - 41mm - Gold Numerals - IW371604 ( new / 2024 )

IWC - IW371604 · $6,995

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

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