Strap for Constellation Quartz 27 Polished Yellow Gold / MOP

The lug width of the Constellation 123.50.27.60.05.004 is 18mm. This measurement is fixed and determined by the distance between the lugs of the yellow gold case. To verify it, remove the strap and measure with a caliper the internal distance between the two lugs: you will find exactly 18mm. It is essential to order straps with this exact lug width to ensure perfect fit.

For a yellow gold watch of the caliber of the Constellation, alligator is the most sophisticated choice for formal occasions: its regular texture creates visual synergy with the characteristic fluted bezel. For daily wear, vegetable-tanned calf is preferable: it ages gracefully and its patina dialogues beautifully with yellow gold. Shell cordovan offers a middle ground with superior resistance and a patina that tends toward burgundy over time. Avoid rubber, which diminishes the preciousness of the precious case.

To change the strap, you will need a spring bar tool. Position the watch with the case facing upward, locate the lugs on each side, and use the spring bar tool to gently compress the small elastic pin inside the lug. The strap will detach easily. To install the new 18mm strap, insert the lugs into the strap openings and ensure that the elastic pin clicks correctly into the resting position. Never force it: if the strap does not fit, verify again that it has the correct lug width.

Any strap with an 18mm lug width is compatible with the Constellation 123.50.27.60.05.004. On Milano Straps you will find a wide selection of 18mm straps in alligator, calf, shell cordovan and other materials, customizable in length, initials and stitching thread color. The Casati Milano atelier can also create custom straps with personal choice of leathers, guaranteeing compatibility and certified sartorial quality.

A high-quality natural leather strap, such as those made by Milano Straps and the Casati Milano atelier, lasts 3-5 years with daily use, and over 10 years if worn occasionally. Durability depends on humidity, sun exposure and frequency of use. Materials with vegetable tanning (calf, shell cordovan) age better than alligator, developing patina without deteriorating. Milano Straps offers an 18-month warranty on custom straps produced by Casati Milano, with the possibility of replacement in case of manufacturing defects.