IWC Portofino Portofino Automatic Day & Night 37
Reference IW4591-01
About this watch
The IWC IW4591-01 Portofino Automatic Day & Night 37 is a breathtaking timepiece that excels in both form and function. Its elegant design, combined with reliable automatic movement and thoughtful features, makes it a standout choice for anyone looking to invest in a luxury watch. The round stainless steel case is perfectly proportioned at 37 mm, making it a versatile choice for both men and women. The white mother-of-pearl dial adds a touch of luxury, while the gem-set bezel sparkles beautifully, drawing attention without being ostentatious. With its rich history, exquisite design, and practical features, this watch is a worthy investment that will serve you well for years to come. Whether you’re dressing up for a special occasion or simply want to elevate your daily attire, this watch is sure to impress.
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Key Features
- IWC caliber 35700 automatic movement
- Sapphire glass crystal with water resistance of 30 meters
- Gem-set bezel and indexes
- Feuille hands for easy readability
- 24-hour hand for global timekeeping
- Stainless steel case with 37 mm diameter
- Comfortable 11 mm height and lightweight design
Specifications
- Brand
- IWC
- Family
- Portofino
- Model
- Portofino Automatic Day & Night 37
- Reference
- IW4591-01
- Movement
- 35700
- Movement Features
-
- Hours, Minutes, Seconds, Additional 24 Hour Hand (adjustable)
- Case
- Stainless Steel 37mm
- Dial Color
- White
- 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](https://preview.redd.it/80x0mtozagqg1.jpg?width=640&crop=smart&auto=webp&s=6d3dac0581daef467e76a9ff4668ba986e76aa86)
IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $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)
![[WTS] IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete](https://preview.redd.it/tps1ijf3m7qg1.jpg?width=640&crop=smart&auto=webp&s=f7705ed146eee2bc0c0cc25fed330b6ab77ea620)
IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete
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
![[WTS] IWC Portofino Automatic Moon Phase 40mm IW459402](https://external-preview.redd.it/z6IRij-KJNcfSP-dwPiSxGyZ-adVXW6tlNj9TjZzNYA.jpeg?auto=webp&s=b92a9b8ec47f0af3f7593c192b2442df0463f4c4)
IWC Portofino Automatic Moon Phase 40mm IW459402
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
![[WTS] IWC Portofino Chronograph 39mm Black Dial IW391404](https://external-preview.redd.it/nPd1XolSueUQxMiM6umpk20nieqF3xhrdZaNYln31mE.jpeg?auto=webp&s=f5453238a75bb71bec339b92915d73dc1da80071)
IWC Portofino Chronograph 39mm Black Dial IW391404
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
![[WTS] IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $8,200](https://preview.redd.it/wxkkeb51wwog1.jpg?width=640&crop=smart&auto=webp&s=cf3babd0b3218fdfde98a53c40a831d5a9ff08a1)
IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $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
![[WTS] IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete](https://preview.redd.it/b08jlyjwotog1.jpg?width=640&crop=smart&auto=webp&s=64eb1f0d8d271f9c4a61efbc8ae853c39c2c6861)
IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete
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
![[WTS] IWC Portofino Chronograph 39mm - Warrantly until 2030](https://preview.redd.it/cr8pav61otog1.jpg?width=640&crop=smart&auto=webp&s=743b6249176480600be6a2478b7815204956dbbc)
IWC Portofino Chronograph 39mm - Warrantly until 2030
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
IWC Portofino Automatic 40MM IW356303 Silver Dial
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
2024 IWC Portofino Hand-Wound Moon Phase Silver Steel FULL SET MINT IW516401
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