Strap for Portofino Automatic Yellow Gold / White - Railroad / Strap

The lug width of the IWC Portofino IW3513-36 is 18 millimetres. This measurement is taken from the centre of one lug hole to the centre of the opposite hole, perpendicular to the case. An 18 mm lug width requires straps specifically designed for this dimension, as it is not compatible with 16, 20, or 22 mm lugs. Always verify compatibility before purchasing a replacement strap.

For a yellow gold Portofino in 34 mm, an alligator strap in vegetable tanning is the premier choice: fine grain, naturally evolving patina, and a tonality that harmonises perfectly with the gold. Shell cordovan represents an excellent alternative for those preferring superior structure and natural lustre. For versatile daily wear, vegetable-tanned calf leather offers an excellent balance of aesthetics and durability with reduced maintenance compared to alligator.

To change the strap, position the watch on a soft, stable surface. Use a spring bar tool to remove the elastic pins securing the strap to the lugs. Gently compress the lateral pin, extract it from the lug hole, and lift away the old strap. Align the new strap's holes with the lugs, then reinsert the spring bars by pushing until you feel an audible click. Verify that the strap is securely seated on both sides before wearing the watch.

Yes, any strap with an 18 mm lug width is compatible with the IW3513-36. High-quality artisanal aftermarket straps ensure complete compatibility and often provide superior materials and finishing compared to OEM IWC straps. Ensure the strap is crafted from noble materials (alligator, shell cordovan, or calf leather) and that stitching is executed with waxed linen or cotton thread for certified durability.

A leather strap's lifespan depends on the tanning method, usage patterns, and maintenance. A vegetable-tanned alligator strap in good condition lasts 4-6 years with moderate daily wear. Shell cordovan, owing to its structural density, can last 6-8 years. Vegetable-tanned calf leather typically resists 3-5 years of regular use. Avoid prolonged exposure to direct moisture, concentrated perspiration, and intense sunlight. Periodic maintenance with natural balms significantly extends the strap's serviceable life.