IWC Portugieser Portuguese Yacht Club Chronograph 43.5 Boesch

Reference IW3905-04

About this watch

The IWC Portuguese Yacht Club Chronograph 43.5 Boesch is a masterpiece of horology, blending stunning design with advanced technology and embodying the spirit of nautical adventure. This limited-edition timepiece, released in 2016 and limited to just 150 units, tells a story of excellence and craftsmanship. With its classic yet sporty aesthetic, it's versatile enough for both formal and casual settings. The brown color scheme paired with the stainless steel case creates a sophisticated yet sporty look. The polished finish adds a touch of elegance, making it suitable for a yacht club dinner or a casual outing. At the heart of this watch lies the IWC caliber 89361, a self-winding flyback chronograph movement boasting a 68-hour power reserve and rapid timing sequences. The sapphire crystal offers scratch-resistance and durability, while the sturdy stainless steel case protects the movement from shocks and impacts. Comfort is key, with an adjustable leather strap that complements its overall aesthetic. This watch is perfect for anyone who enjoys the finer things in life, particularly those with a passion for sailing or nautical activities.

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Key Features

43.5mm Round Stainless Steel Case
Sapphire Crystal Scratch-Resistant and Durable
IWC Caliber 89361 Self-Winding Flyback Chronograph Movement
68-Hour Power Reserve and Rapid Timing Sequences
Water Resistance up to 60 meters
Brown Color Scheme with Polished Finish
Adjustable Leather Strap

Specifications

Brand

IWC

Family

Portugieser

Model

Portuguese Yacht Club Chronograph 43.5 Boesch

Reference

IW3905-04

Movement

89361

Movement Features

Hours, Minutes, Small Seconds
Date
Chronograph, Flyback

Case

Stainless Steel 43.5mm

Dial Color

Brown

Crystal

Sapphire

Water Resistance

Current Listings

IWC Portugieser Chronograph IW371624 Automatic Dune Dial 2024 41mm Full Set

IWC - IW371624 · $6,997

This is an IWC Portugieser Chronograph with a stainless steel case, dune dial on black alligator strap, and automatic movement.

Condition: Very good
Case size: 41mm diameter
Material: Stainless steel
Movement: Automatic

Posted at

May 18, 2026, 8:53 AM

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IWC Portugieser Tourbillon Mystere, White Gold IW504207 ♦️Lightly Used Undated♦️

IWC - IW504207 · $30,300

This IWC Portugieser Tourbillon Mystere features a white gold case and is in lightly used condition. It comes with a full set, including the box and papers.

Condition: Lightly Used
Case material: White Gold
Movement: Calibre 65

Posted at

May 18, 2026, 4:42 AM

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View listing on r/WatchExchange

IWC Portugieser Automatic (IW500109)

IWC - IW500109 · $5,500

This IWC Portugieser Automatic is a discontinued reference featuring a black dial on a black leather strap. It comes with box, booklets, and warranty card dated January 2011.

Condition: Very Good
Case Size: 42mm
Case Material: Stainless Steel
Bracelet Material: Leather

Posted at

May 17, 2026, 10:08 AM

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[US] IWC Portugieser Automatic 40 - Silver Dial - 40mm - IW358312 - BRAND NEW

IWC - IW358312 · $6,925

This IWC Portugieser Automatic 40 is a high-end mechanical watch with a silver dial and 40mm case. It's fully linked and comes with an extensive set of accessories. The watch functions perfectly mechanically and is in pristine condition.

Condition: Brand new, unworn
Case size: 40mm

Posted at

May 16, 2026, 7:40 AM

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IWC Portugieser Hand-Wound Eight Days Edition 150 Years - $5,000

IWC - Portugieser Hand-Wound Eight Days Edition 150 Years · $5,000

Up for sale is an IWC Portugieser Hand-Wound Eight Days Edition 150 Years, a dress watch that rarely gets worn.

Condition: 2 light marks on the case, clean crystal
Case condition: 2 light marks on the case
Crystal condition: clean
Included accessories: original boxes, original strap, extra blue alligator strap, documents

Posted at

May 15, 2026, 3:45 PM

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2022 IWC Portugieser Chronograph Green IW371615 41mm Full Set - $5,995

IWC - IW371615 · $5,995

A 2022 IWC Portugieser Chronograph Green, a 41mm luxury watch featuring chronograph functionality.

Condition: Excellent condition with minimal signs of wear
Case Size: 41mm

Posted at

May 14, 2026, 12:47 PM

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IWC Portugieser Chronograph IW371624 Automatic Dune Dial 2024 41mm Full Set

IWC - IW371624 · $6,997

This pre-owned IWC Portugieser Chronograph features a stainless steel case with dune dial on black alligator strap and automatic movement.

Condition: Very good condition
Case size: 41mm diameter
Movement type: Automatic

Posted at

May 11, 2026, 8:52 AM

Active

View listing on r/WatchExchange

IWC Portugieser Automatic (IW500109)

IWC - IW500109 · $5,500

This IWC Portugieser Automatic is a discontinued reference featuring a black dial on a black leather strap, with a case size of 42mm and stainless steel construction. It comes with box, booklets, and warranty card dated January 2011.

Condition: very good
Case size: 42mm diameter
Case material: Stainless Steel
Bracelet material: Leather

Posted at

May 10, 2026, 11:45 AM

Active

View listing on r/WatchExchange