IWC Portofino Portofino Chronograph Stainless Steel / Silver / Milanese

Reference IW3910-28

About this watch

The IWC Portofino Chronograph IW3910-28 is a masterpiece of luxury watchmaking, blending classic aesthetics with modern technology to create a statement piece that's both sophisticated and approachable. With its sleek silver dial and polished stainless steel case, this watch is sure to turn heads. The chronograph function allows for precise timekeeping, while the round case and Milanese bracelet provide comfort and versatility. At the heart of this timepiece lies the IWC Caliber 75320, a robust automatic movement engineered for reliability and precision. Whether you're in need of a reliable companion for everyday wear or a stylish accessory for formal events, the IW3910-28 is sure to impress. Its elegant design, rich history, and craftsmanship make it a worthy investment for any luxury watch collector.
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MSRP: $7,600
Market Price: $4,368

Key Features

  • 42mm stainless steel case
  • IWC Caliber 75320 automatic movement
  • Chronograph function with precision timekeeping
  • Sleek silver dial and polished stainless steel case
  • Adjustable Milanese bracelet for comfort
  • 30m water resistance for everyday wear

Specifications

Brand
IWC
Family
Portofino
Model
Portofino Chronograph Stainless Steel / Silver / Milanese
Reference
IW3910-28
Movement
75320
Movement Features
  • Hours, Minutes, Small Seconds
  • Date, Day
  • Chronograph
Case
Stainless Steel 42mm
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 $8,200

IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $8,200

IWC - IW459604 · $8,200
A limited edition IWC Portofino Automatic Moon Phase watch with a striking and elegant design, featuring a moon phase display and a bespoke snake-shaped solid gold rotor.

  • Condition: Great condition
  • Case size: 37.1mm diameter
  • Thickness: 11.3mm
  • Water resistance: ~50m (5 bar)
Posted at
Mar 21, 2026, 3:36 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 IWC Portofino Automatic Moon Phase features a blue dial in a 40mm case. It includes inner & outer IWC boxes, manual, and warranty card.

  • Condition: Very good, with a few microscratches on the caseback and clasp
  • Box set included: Yes
  • Warranty expiration year: 2028
Posted at
Mar 20, 2026, 10:23 AM
Active
[WTS] IWC Portofino Automatic Moon Phase 40mm IW459402

IWC Portofino Automatic Moon Phase 40mm IW459402

IWC - IW459402 · $5,750
2020 IWC Portofino Automatic Moon Phase in 40mm stainless steel with blue dial and moon phase display.

  • Condition: Very Good to Excellent pre-owned
  • Movement: automatic movement
  • Material: stainless steel
  • Case size: 40mm
Posted at
Mar 16, 2026, 8:11 PM
Active
[WTS] IWC Portofino Chronograph 39mm Black Dial IW391404

IWC Portofino Chronograph 39mm Black Dial IW391404

IWC - IW391404 · $5,750
2021 IWC Portofino Chronograph in 39mm stainless steel features a stunning, classic combination of black dial with gold hands and markers. A slim automatic chronograph, beautifully proportioned dress watch.

  • Condition: Very Good to Excellent pre-owned
  • Year: 2021
  • Material: stainless steel
  • Size: 39mm diameter
Posted at
Mar 16, 2026, 2:22 PM
Active
[WTS] IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $8,200

IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $8,200

IWC - IW459604 · $8,200
A limited edition IWC Portofino Automatic Moon Phase watch with a 37mm stainless steel case, burgundy/red dial, and moon phase display. It features an 18k 5N gold snake-shaped rotor and comes with two quick-change calfskin straps.

  • Condition: great condition
  • Case size: 37.1 mm
  • Thickness: 11.3 mm
  • Dial color: burgundy/red
Posted at
Mar 13, 2026, 9:14 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
A blue dial IWC Portofino Automatic Moon Phase in 40mm diameter, features an automatic movement.

  • Condition: In very good condition, rated at 9.5/10
  • Caseback scratches: a few microscratches
  • Clasp scratches: a few microscratches
  • Included items: Inner & outer IWC boxes, manual, and warranty card
Posted at
Mar 13, 2026, 10:29 AM
Active
[WTS] IWC Portofino Chronograph 39mm - Warrantly until 2030

IWC Portofino Chronograph 39mm - Warrantly until 2030

IWC - IW391406 · $5,200
The IWC Portofino Chronograph 39 combines a classic design with sportiness in a compact case size of 39 millimeters.

  • Case Size: 39mm diameter
  • Warranty Until: 2030
Posted at
Mar 13, 2026, 10:26 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