Strap for Portuguese Chrono-Automatic Stainless Steel / Bucherer Blue

The Portugieser IW3714-92 is equipped with a lug width of 20.00 mm. This measurement is essential when selecting compatible aftermarket straps or bracelets. Always verify the internal distance between the case lugs with a digital calliper before purchasing a replacement strap.

The ideal strap depends on your intended use and season. For formal or evening wear, dark alligator leather with developed patina is the natural choice. For a sportier, daily-wear aesthetic, vegetable-tanned calfskin offers an evolving and compelling patina. For absolute versatility, a black NATO strap allows you to alternate the same watch across different contexts without compromise.

Position your watch on a soft surface with the caseback facing upward. Locate the spring bars at the extremities of the lugs using a magnifying lens if necessary. Use a dedicated spring bar tool to retract the bars and slide the old strap out from the attachments. Insert the new strap by aligning the holes with the spring bars, then release the bars into position. Verify complete insertion before wearing the watch.

Yes, the standard 20.00 mm lug width accommodates superior-quality aftermarket straps. MilanoStraps offers an extensive selection of 20mm straps in alligator, shell cordovan, vegetable-tanned leather, and rubber. It is essential to choose straps crafted by specialised artisans to ensure dimensional accuracy and attachment durability.

Lifespan depends on material, usage frequency, and maintenance. A high-quality alligator strap with vegetable tanning lasts approximately 3-5 years with daily wear. Shell cordovan, being more robust, extends this to 5-7 years. Vegetable-tanned calfskin develops a beautiful patina within 6-12 months. Factors such as humidity, usage frequency, and lack of periodic cleaning significantly reduce service life.