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IWC Portofino Chronograph - IW391037 - Stainless steel
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Manufacturer details checked

IWC Schaffhausen

IWC Schaffhausen IW391037

Portofino Chronograph

Exact manufacturer referencePortofino19 recorded specifications
Reference
IW391037
Dial Color
Silver plated
Case
Stainless steel
Strap
Blue alligator leather strap
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Manufacturer specifications checked for this reference

These specifications were checked against the manufacturer page for this exact reference.

Reference
IW391037
Dial Color
Silver plated
Case
Stainless steel
Strap
Blue alligator leather strap
Diameter
42 mm
Movement
Automatic, self-winding
Strap width
20 mm
Buckle width
18 mm
Case
Stainless steel
Diameter
42 mm
Height
13.6 mm
Water Resistance
3 Bar
Back case
Standard
Caliber
75320
Movement type
Automatic, self-winding
Power Reserve
44 hours
Frequency
28800 Vph (4 Hz)
Components
240
Jewels
25
View product-page source ↗

Checked 2026-09-27 · Regional scope: manufacturer Europe · Manufacturer specifications; individual watches may vary.

Original manufacturer wording is retained for source data without a reviewed translation.

Recorded discovery details.

Reference token
IW391037
Collection candidate
Portofino
Family candidate
Not established
Product type
Watch candidate

Official discovery source

The exact token was retained from a stored official manufacturer URL or feed. The source supports discovery, but does not by itself verify every model detail.

Open official manufacturer page ↗

Source record: iwc-official-current-catalog-20260919 · Manufacturer details checked; editorial publication pending.

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These are discovery candidates, not verified alternatives or product variants.