IWC Portofino Portofino Automatic Moon Phase 37 Red Gold / Diamond / MOP / Bracelet

Reference IW4590-05

About this watch

The IWC Portofino IW4590-05 is a masterpiece of luxury watchmaking, boasting an exquisite mother of pearl dial and gem-set indexes. Its red gold case exudes warmth and sophistication, while the IWC Caliber 35800 movement provides precise timekeeping with a robust reserve of 42 hours. The moon phase complication adds an extra layer of functionality, tracking the lunar cycle with precision. With its elegant design and luxurious materials, this watch is perfect for those who value refinement and understated elegance. Whether you're a seasoned collector or simply looking for a statement piece, the IW4590-05 is sure to impress.
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Key Features

  • IWC Caliber 35800 movement with 42-hour reserve
  • Exquisite mother of pearl dial with gem-set indexes
  • Red gold case with sapphire crystal
  • Water resistance up to 30 meters
  • Moon phase complication and date display
  • Luxurious bracelet with red gold links
  • 37mm diameter case strikes perfect balance between presence and delicacy

Specifications

Brand
IWC
Family
Portofino
Model
Portofino Automatic Moon Phase 37 Red Gold / Diamond / MOP / Bracelet
Reference
IW4590-05
Movement
35800
Movement Features
  • Hours, Minutes, Seconds
  • Moonphase
Case
Red Gold 37mm
Dial Color
White
Crystal
Sapphire
Water Resistance
30

Current Listings

[WTS] IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete

IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete

IWC - IW459402 · $4,950
IWC Portofino Automatic Moon Phase 40mm Blue Dial is a luxury watch featuring an automatic movement and moon phase display.

  • Condition: Very good, with a few microscratches on the caseback and clasp (9.5/10)
  • Box: Inner & outer IWC boxes
  • Manual: Yes, included
  • Warranty: Until 2028 (dated 2020)
Posted at
Feb 27, 2026, 10:15 AM
Active
[WTS] IWC Portofino Automatic 40mm IW356527 – White Dial / Blue Hands – Complete Set

IWC Portofino Automatic 40mm IW356527 – White Dial / Blue Hands – Complete Set

IWC - IW356527 · $4,250
The IWC Portofino Automatic is a clean and timeless dress piece that features a white dial with applied blue markers, blued hands, and a 40mm stainless steel case. It includes an automatic movement, date at 3 o'clock, and a blue alligator strap.

  • Condition: Excellent overall condition
  • Case diameter: 40mm
  • Band material: blue alligator strap
Posted at
Feb 25, 2026, 8:17 PM
Active
[WTS] IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete

IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete

IWC - IW459402 · $4,950
This is an IWC Portofino Automatic Moon Phase in blue dial. The watch features an automatic movement and moon phase display.

  • Condition: Very good, with a few microscratches on the caseback and clasp.
  • Diameter: 40mm
Posted at
Feb 20, 2026, 10:26 AM
Active
[WTS] IWC Portofino Automatic Moonphase 40mm - IWC45902 - Full set - $6050

IWC Portofino Automatic Moonphase 40mm - IWC45902 - Full set - $6050

IWC - IWC45902 · $6,050
This is an IWC Portofino Automatic Moonphase watch in a 40mm case, featuring a moon phase display. It comes with a full set of accessories.

  • Case size: 40mm
Posted at
Feb 19, 2026, 3:55 PM
Active
[WTS] IWC Portofino Automatic 150 Years Edition $2,550

IWC Portofino Automatic 150 Years Edition $2,550

This is a rare IWC Portofino Automatic 150 Years Edition watch for sale. It has been well-maintained and shows light signs of use. The timegrapher numbers are shown.

  • Condition: Good condition with light signs of use
  • Strap Condition: light signs of use
  • Case Condition: light scratches
Posted at
Feb 16, 2026, 4:58 AM
Active
IWC Portofino Automatic 40MM IW356303 Silver Dial

IWC Portofino Automatic 40MM IW356303 Silver Dial

IWC - IW356303 · $2,080
IWC Portofino Automatic 40MM IW356303 Silver Dial is a men's watch with a mechanical automatic movement.

  • Condition: 90%
  • Size: 40mm diameter
  • Case material: Stainless Steel
Posted at
Apr 8, 2025, 8:48 AM
Active
2024 IWC Portofino Hand-Wound Moon Phase Silver Steel FULL SET MINT IW516401

2024 IWC Portofino Hand-Wound Moon Phase Silver Steel FULL SET MINT IW516401

IWC - IW516401 · $8,875
This IWC Portofino Hand-Wound Moon Phase features a silver-plated dial with a moon phase display, high-polished stainless steel domed bezel and case, and an exhibition caseback offering a clear view of the movement. It has an 8-day power reserve when fully wound and includes various functions such as hours, minutes, date, small seconds subdial, moon phase display, and power reserve indicator.

  • Condition: Mint
  • Case Size: 42mm
  • Material: stainless steel
  • Movement Type: hand-wound
Posted at
Apr 2, 2025, 5:33 PM
Active
IWC Portofino 18K Rose Gold Grey Dial Eight Days 45mm IW510104

IWC Portofino 18K Rose Gold Grey Dial Eight Days 45mm IW510104

IWC - IW510104 · $8,190
The IWC Portofino is a men's watch featuring a grey dial and 18K rose gold case, with a size of 45mm. It has a mechanical manual movement and functions include date and power reserve.

  • Condition: 90%
  • Case material: 18K Rose Gold
  • Movement type: Mechanical Manual
  • Size: 45mm
Posted at
Mar 6, 2025, 9:28 AM
Active
IWC Portofino Hand-Wound 8 Days Hand-Wound Black Steel 45mm IW510102 Strap

IWC Portofino Hand-Wound 8 Days Hand-Wound Black Steel 45mm IW510102 Strap

IWC - IW510102 · $4,199
The IWC Portofino Hand-Wound 8 Days is a pre-owned watch with a black steel case, featuring an IWC hand-wind movement and 45mm diameter. It comes with an IWC box, papers, and a brown leather strap.

  • Condition: Excellent
  • Case material: Stainless Steel
  • Crystal type: Sapphire
  • Movement type: Hand Wind
Posted at
Feb 28, 2025, 7:57 PM
Active