Strap for Constellation Co-Axial 27 Brushed Stainless Steel / Yellow Gold / Diamond / MOP

The lug width of model 123.25.27.20.55.007 is 18mm. This width is specific to the 27mm case and is measured between the internal anchor pins. It is essential to verify this dimension before purchasing an aftermarket strap to ensure perfect compatibility.

For this model with a two-tone gold/steel case and mother-of-pearl dial, we recommend alligator in cognac or dark brown tones for maximum aesthetic nobility. Vegetable-tanned calf in black or burgundy offers versatility and a patina that improves over time. Shell cordovan represents the choice for those seeking exceptional longevity and unique character in aging.

The strap is changed by extracting the anchor pins from the case lugs using a specific spring bar tool. Since the Constellation 123.25.27.20.55.007 has an 18mm lug width, ensure you have a tool that will not damage the two-tone case finish. It is advisable to have a qualified watchmaker assist you to preserve the integrity of this reference.

No. The 18mm lug width is specifically sized for this 27mm case. A 16mm strap will leave unwanted visual gaps between the case and strap, compromising aesthetics. A 20mm strap will not secure properly in the pins. You must use straps calibrated for 18mm.

The lifespan depends on the material chosen and usage. Vegetable-tanned calf ranges from 3 to 5 years with ordinary maintenance. Alligator, thanks to skin density, can last 5-7 years. Shell cordovan is notably more resistant and can exceed 10 years if properly maintained. Milano Straps offers an 18-month warranty and we recommend rotating straps to extend the life of each one.