Strap for Portugieser Perpetual Calendar 5023 Red Gold / Silver

The Portugieser IW5023-02 features a 22mm lug width. This measurement refers to the distance between the two spring bars that hold the strap to the case. To verify this measurement, place a ruler against the lugs on both sides of the case; you should obtain exactly 22mm. Respecting this precise measurement ensures a perfect integration of the strap with the case without gaps or excessive protrusion.

Alligator leather remains the optimal choice for the Portugieser IW5023-02. Its natural texture, with regular square markings, harmonises elegantly with rose gold without competing visually with the case. High-quality alternatives include vegetable-tanned calf leather, which develops an aged patina complementary to the golden metal over time, or shell cordovan for those seeking a lacquered smoothness with deep reflections. Technical black rubber also constitutes a valid modern choice, creating a refined aesthetic contrast.

To change the strap on your Portugieser IW5023-02, you will need an appropriate tool (sprung bar tool or spring bar pen). Position the watch on a protected, flat surface. Use the tool to gently compress the spring pin that holds the upper strap lug, then remove the old strap. Repeat the procedure for the lower lug. Now insert the new strap, ensuring the spring pin clicks correctly on both sides. If you feel uncertain, consult a specialist: Casati Milano offers professional assistance to guarantee flawless installation.

Yes, provided the aftermarket strap features the correct lug width (22mm) and is constructed to elevated quality standards. Artisanal straps from Milano Straps, for example, are specifically engineered for models such as the Portugieser and guarantee mechanical and aesthetic compatibility. A high-quality aftermarket strap does not compromise the case and allows you to personalise your watch according to your preferences. However, it is essential to respect the lug width to avoid damage to the case attachments.

An artisanal leather strap of quality craftsmanship, such as those produced by Casati Milano, typically lasts 4-6 years with daily use, depending on exposure to sunlight, perspiration, and humidity. Vegetable tanning tends to last longer than modern chemical tannages, whilst alligator leather offers particular durability. If you wear the Portugieser occasionally or alternate it with other watches, lifespan can extend considerably. Periodic maintenance (cleaning and conditioning with specific products) extends strap longevity. Casati Milano offers an 18-month warranty on its artisanal work.