Strap for Constellation Quartz 24 Brushed Yellow Gold / Diamond / MOP Supernova

The lug width is 18mm. This dimension is determined by the distance between the two horizontal pins of the case that support the strap lugs. An 18mm strap fits perfectly into the housing without lateral play, ensuring correct aesthetics and precise wrist fit.

For a 24mm yellow gold watch, alligator is the premium choice: its natural, compact grain enhances the case's luxury without competing with it. Elegant alternatives include vegetable-tanned calf in cognac or dark brown tones, or black sports rubber for those preferring daily versatility. Avoid NATO straps for this model: they would visually compress such an elegant case.

The change is made by removing the two horizontal pins (spring bars) that pass through the case lugs. Use a precision tool specifically designed for this—available at Casati Milano atelier—to gently extract the pins without scratching the gold. The new strap is inserted by sliding the pins through the new housing. If you lack experience, professional service at Casati Milano ensures zero risk to the case.

Yes, all straps with 18mm lug width are mechanically compatible. However, to preserve the aesthetic identity of a yellow gold Constellation, we recommend choosing materials and finishes that dialogue with the case: avoid straps that are too thick (over 4mm shoulder width) as they would alter proportions. Milano Straps are developed specifically for classic luxury watches and meet these criteria.

A fine leather strap (alligator, vegetable-tanned calf) subjected to seasonal rotation typically lasts 4-6 years before requiring replacement. With daily use, the lifespan reduces to 2-3 years. Milano Straps offer an 18-month warranty against manufacturing defects. Patina and any aging of the leather are natural characteristics: some straps actually improve aesthetically over time, developing a more pronounced grain and richer tone.