IWC · Portugieser

Strap for Portuguese Automatic Red Gold / Silver

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

22mm
Lug width22 mm
Case diameter42 mm
ReferenceIW5001-13 (aka: 5001-13, IW500113)
FamilyPortugieser
MovementIWC caliber 51011 Hours, Minutes, Small Seconds | Date | Power Reserve Indicator
CaseRed Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Portugieser IW5001-13 (aka: 5001-13, IW500113)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Portugieser IW5001-13 (aka: 5001-13, IW500113), seen from the bench

The Portugieser IW5001-13 is a 42.30mm red gold case watch with a 22mm lug width, representing eight decades of IWC watchmaking refinement since 1939. It features the IWC caliber 51011 manufacture movement with seven-day power reserve, visible power reserve indicator, hours, minutes, small seconds and date. The minimalist dial displays applied Arabic numerals and railway scale, embodying pure geometry and controlled mechanical complexity without ornamental elements.

Frequently asked questions

What is the correct lug width for the IWC Portugieser IW5001-13?

The lug width of the Portugieser IW5001-13 is 22mm. This dimension is specific to the model and must be measured precisely (centre to centre of the lugs) before ordering a strap. An incorrect width compromises both the aesthetics and functionality of the deployant or buckle.

What is the best strap for the IWC Portugieser IW5001-13 in rose gold?

For the rose gold IW5001-13, alligator with vegetable tanning is the most noble choice: its natural grain amplifies the warmth of the metal. Shell cordovan offers a different and sophisticated luminescence. Vegetable-tanned calf is the versatile solution, whilst technical NATO straps maintain the timepiece's nautical vocation.

How do I change the strap on my IWC Portugieser IW5001-13?

The process requires specific tools: a strap change bar (or a small screwdriver) to remove the lug pins from the case. Position the watch with the case protected, carefully extract the pin from the opposite side, remove the strap and insert the new one. If unfamiliar with the procedure, consult a professional: rose gold requires caution.

Can I use a compatible aftermarket strap on my IWC Portugieser IW5001-13?

Yes, any 22mm strap is physically compatible. However, to maintain aesthetic integrity and longevity, choose brands that guarantee construction quality and noble materials (alligator, cordovan, vegetable-tanned calf). Avoid inexpensive materials that age poorly on rose gold.

How long does a natural leather strap last on the IWC Portugieser IW5001-13?

A noble strap with vegetable tanning, worn regularly, lasts 3–5 years, sometimes longer with conscious maintenance. Alligator and shell cordovan are more durable than standard alligator. The developing patina is desirable, but if the strap weakens, the Casati Milano atelier offers an 18-month warranty and rapid replacement service.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only