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

Reference IW4590-10

About this watch

The IWC IW4590-10 Portofino Automatic Moon Phase 37 is a masterpiece of luxury watchmaking. This exquisite timepiece combines elegance, sophistication, and a touch of celestial charm with its red gold case, gem-set bezel, and moonphase indicator at 12 o'clock. The silver dial with gem-set indexes glimmers subtly against the backdrop, ensuring that the time is not only readable but also a feast for the eyes. Powered by the IWC caliber 35800 movement, this watch showcases precision and reliability with a self-winding mechanism and 42-hour power reserve. With a water resistance of 30 meters, it's perfect for daily activities, but best suited for casual strolls rather than underwater adventures. The combination of red gold and silver creates a harmonious look that complements any outfit, making this watch a standout choice for those who value luxury and craftsmanship.
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Key Features

  • IWC caliber 35800 movement with self-winding mechanism
  • Red gold case with gem-set bezel
  • Moonphase indicator at 12 o'clock
  • Silver dial with gem-set indexes
  • Water resistance of 30 meters
  • 42-hour power reserve
  • 37 mm diameter and 11 mm height

Specifications

Brand
IWC
Family
Portofino
Model
Portofino Automatic Moon Phase 37 Red Gold / Diamond / Silver / Bracelet
Reference
IW4590-10
Movement
35800
Movement Features
  • Hours, Minutes, Seconds
  • Moonphase
Case
Red Gold 37mm
Dial Color
Silver
Crystal
Sapphire
Water Resistance
30

Current Listings

[WTS] IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $7,850

IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $7,850

IWC - IW459604 · $7,850
The IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake is a striking and elegant limited-edition piece that blends classic dress watch refinement with artistic flair. The 37mm polished stainless steel case paired with the rich burgundy/red dial gives this watch an eye-catching yet tasteful presence on the wrist.

  • Condition: great condition
  • Case size: 37.1 mm
  • Thickness: 11.3 mm
  • Dial color: burgundy/red
Posted at
May 16, 2026, 4:24 PM
Active
[WTS] IWC Portofino Chronograph $3200 SHIPPED

IWC Portofino Chronograph $3200 SHIPPED

IWC - IW391002 · $3,200
This IWC Portofino Chronograph features a 42 mm case without crown and 45 mm with crown. It includes the original strap and buckle.

  • Condition: Pre-owned, working condition, sold as-is
  • Case size: 42mm diameter
  • Band type: original
Posted at
May 16, 2026, 12:15 PM
Active
[WTS] 2021 IWC Portofino Chronograph White IW391027 42mm Full Set - $4,395

2021 IWC Portofino Chronograph White IW391027 42mm Full Set - $4,395

IWC - IW391027 · $4,395
A 2021 IWC Portofino Chronograph White, a 42mm chronograph watch featuring a white dial.

  • Condition: Excellent condition with minimal signs of wear
  • Year: 2021
  • Size: 42mm diameter
  • Contents: Box, Travel Case, International Warranty Card, Instructions Manual
Posted at
May 14, 2026, 12:48 PM
Active
[WTS] 2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995

2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995

IWC - IW391404 · $5,995
Up for sale is a IWC Portofino Chronograph Black, a 39mm timepiece with chronograph functionality.

  • Condition: New condition
  • Year: 2025
  • Case size: 39mm
Posted at
May 14, 2026, 12:45 PM
Active
[WTS] 2021 IWC Portofino Chronograph White IW391027 42mm Full Set - $4,395

2021 IWC Portofino Chronograph White IW391027 42mm Full Set - $4,395

IWC - IW391027 · $4,395
A 2021 IWC Portofino Chronograph White, a 42mm watch in excellent condition.

  • Condition: Excellent condition with minimal signs of wear
  • Case size: 42mm diameter
  • Shipping method: Fedex
  • Insurance included: true
Posted at
May 11, 2026, 9:48 PM
Active
[WTS] 2015 IWC Portofino Chronograph | Complete set | Cheapp

2015 IWC Portofino Chronograph | Complete set | Cheapp

IWC - IW391008 · $3,385
This Portofino is a timeless classic — elegant, refined, and versatile. The chronograph adds useful functionality without detracting from the dress-watch feel, making this a great addition for both daily wear and special occasions.

  • Condition: Good pre-owned
  • Case Size: 42mm
  • Movement: IWC automatic chronograph
  • Includes: Original IWC box, IWC warranty card, stainless steel mesh bracelet
Posted at
May 10, 2026, 7:18 PM
Active
[WTS] 2018 IWC Portofino Chronograph 42mm Ref IW391008 | Box & Papers

2018 IWC Portofino Chronograph 42mm Ref IW391008 | Box & Papers

IWC - IW391008 · $3,700
a classy IWC Portofino Chronograph in 42mm size with black dial and automatic movement

  • Condition: good preowned condition with normal wear
  • Movement Type: Automatic
  • Power Reserve: 44 hours
  • Case Size: 42mm diameter
Posted at
May 9, 2026, 7:37 PM
Active
[WTS] 2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995

2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995

IWC - IW391404 · $5,995
This is a brand new IWC Portofino Chronograph Black with a 39mm case size, featuring a chronograph function.

  • Condition: New condition
  • Case size: 39mm diameter
Posted at
May 9, 2026, 11:19 AM
Active
[WTS] 2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995

2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995

IWC - IW391404 · $5,995
Up for sale is a new IWC Portofino Chronograph Black, a 39mm watch with chronograph functionality.

  • Condition: New condition
  • Year: 2025
  • Case size: 39mm
  • Contents: Watch,Box,Travel Case,International Warranty Card,Instructions Manual
Posted at
May 7, 2026, 11:48 AM
Active