Omega · Constellation
Strap for Constellation Quartz 27 Polished Yellow Gold / Diamond / Champagne Supernova
Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Constellation 123.55.27.60.58.002 (aka: 12355276058002)
Selected for the 19 mm lug width
Hammered Calfskin Strap Light Blue€98
Vintage Brown Calfskin Strap — Natural Patina€98
Hammered Pink Strap with Ecru Stitching€98
Hammered Yellow Strap with Ecru Stitching€98
Grey Hammered Leather Strap with Ecru Stitching€98
Swift Red Leather Strap€120
The Constellation 123.55.27.60.58.002 (aka: 12355276058002), seen from the bench
Frequently asked questions
What is the lug width of the Omega Constellation 123.55.27.60.58.002?
The lug width of the Constellation 123.55.27.60.58.002 is 19mm. This is the distance between the two lugs protruding from the case. It is essential to verify this specification before purchasing an aftermarket strap to ensure a perfect fit without lateral play.
Which strap material pairs best with the Omega Constellation 27mm in yellow gold?
For the Constellation 123.55.27.60.58.002 in yellow gold, alligator remains the most elegant choice. Cognac or dark brown tones create natural contrast with the golden yellow of the case. Alternatively, horse shell cordovan offers a deep and transparent patina, while Italian vegetable-tanned calf represents a more versatile and modern solution, suitable for daytime and evening occasions.
How do you change the strap on an Omega Constellation with 19mm lugs?
The strap is changed using a spring bar tool. Position the watch firmly, gently push the spring bar on one side until it is freed from its seat, then extract the old strap. Insert the new strap by aligning one spring bar first, then the other, ensuring they fully enter their housings. If you prefer to avoid any risk, the Casati Milano atelier offers a strap change service with a guarantee on the quality of the work.
Are aftermarket straps compatible with the Constellation 123.55.27.60.58.002 available?
Yes, Milan Straps offers a complete collection of 19mm straps ready to ship, customizable in material (alligator, shell cordovan, calf), color, final size, and stitching style. All straps are designed to guarantee perfect compatibility with the standard 19mm lug width of your Constellation. Casati Milano atelier also offers custom personalization services by appointment.
How long does a leather strap last on a 27mm Omega Constellation?
The lifespan of a leather strap depends on frequency of use, climatic conditions, and material quality. An excellent alligator or shell cordovan can last 5-7 years with daily wear, while vegetable-tanned calf tends to develop patina more quickly, generally requiring replacement every 3-5 years. A rubber Tropic or FKM strap offers a lifespan of 6-8 years. The 18-month warranty offered by Casati Milano covers defects in craftsmanship and materials.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only

