Strap for Vintage Portofino 1984 Stainless Steel

The IWC Vintage Collection IW5448-01 features a lug width of 22 millimetres. This measurement refers to the distance between the internal shoulders of the lugs and is the standard reference for selecting compatible watch straps.

For the IW5448-01, we recommend a vegetable-tanned Tuscan leather strap first, as it preserves the mechanical gravitas of the timepiece whilst maintaining aesthetic coherence with the stainless steel case. Natural alligator in dark brown represents the most sophisticated alternative, whilst vulcanised rubber is ideal if you prioritise maintenance simplicity and dimensional stability over time.

Changing the strap requires a spring bar tool with a dual-ended design. Position the tool in the slot on the lug, compress the elastic pin, remove the old strap, and insert the new one by aligning the shoulders correctly. If you lack confidence with this procedure, consult a watchmaker or our Casati Milano atelier to avoid damage to the case.

Yes, any 22mm strap is mechanically compatible with the IW5448-01. However, verify that the strap thickness in the lug zone (typically between 3 and 5 millimetres) is proportionate to the case to avoid stress on the lugs. Our straps are dimensioned specifically for watches of this category.

The lifespan of a leather strap depends on the tanning method, usage patterns and maintenance. A vegetable-tanned quality strap typically requires replacement between 3 and 5 years with daily wear. Alligator leather, owing to its superior fibre density, can last beyond 7 years. Vulcanised rubber offers similar longevity to vegetable-tanned leather but provides superior resistance to atmospheric agents.