Strap for Minute Repeater Split-Seconds Chronograph Perpetual Calendar Platinum / Rose / Tokyo 2023

The 5308P-010 requires a strap with a lug width of 20 mm. This measurement represents the outer distance between the two lugs of the case and determines compatibility with any strap. Always verify this measurement before purchase, as even a slight deviation (19 mm or 21 mm) would cause fitting issues.

For a timepiece of this complexity, French <a href="/pages/termine-glossario/alligatore">alligator</a> or <a href="/pages/termine-glossario/shell-cordovan">shell cordovan</a> with vegetable tanning are recommended. Both age gracefully and develop a patina that harmonises with the platinum case. Alligator offers more visible natural grain, whilst shell cordovan guarantees greater wear resistance.

The replacement requires a specific tool (spring bar tool) to remove the horizontal pins from the lugs. Position the watch on a soft cloth, locate the pin from the underside of the case, gently push the tool until the pin emerges, remove it completely, take off the old strap and insert the new one by aligning the holes. This work is preferably entrusted to a qualified watchmaker to avoid damage to the platinum.

Yes, if the strap has a lug width of exactly 20 mm and thickness consistent with the case thickness (approximately 5-6 mm). An artisanal strap crafted by ateliers such as Casati Milano guarantees construction quality equivalent to or superior to official Patek Philippe straps, provided the material and finish are carefully selected.

A quality alligator or shell cordovan strap lasts 5-8 years with daily use and routine maintenance (avoid excessive water exposure, periodically clean with a dry soft cloth). Factors such as climate, frequency of use and sun exposure accelerate the wear process. Casati Milano offers an 18-month warranty on manufacturing defects and provides advice on restoration and preventive maintenance.