Omega · Constellation
Strap for Constellation Co-Axial 35 Yellow Gold / Silver
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Constellation 123.50.35.20.52.002 (aka: 12350352052002)
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€149
Red Alligator Strap Water Resistant€195
Green Rubberized Alligator Strap with Ecru Tribal Stitching€149
Hammered Calfskin Strap Light Blue€98
Vintage Olive Green Calf Leather Watch Strap€80
The Constellation 123.50.35.20.52.002 (aka: 12350352052002), seen from the bench
Frequently asked questions
What is the lug width of the Omega Constellation 123.50.35.20.52.002?
The 35mm Omega Constellation 123.50.35.20.52.002 features a lug width of 20mm. This measurement represents the space between the two attachment lugs on the case where the strap is inserted. It is essential to verify this dimension before purchasing an aftermarket strap, as even a small variation would create instability or incompatibility. Measure the lug width with a digital caliper positioned perpendicular to the dial, between the inner lugs.
Which strap material is best suited for a Constellation in yellow gold?
For an Omega Constellation in yellow gold 123.50.35.20.52.002, alligator represents the ideal choice: the natural grain and warm patina pair perfectly with the precious metal. Vegetable-tanned calf offers an elegant alternative with a patina that evolves over time. Shell cordovan creates dynamic contrast through its natural luster. FKM rubber remains the most practical solution for daily use and sporting environments, without compromising tactile comfort on the wrist.
How do I change the strap on my Constellation 123.50.35.20.52.002?
Changing the strap on your Constellation is a straightforward operation but requires attention. Position the watch on a soft pad (do not scratch the yellow gold). Use a spring bar tool (specific instrument) to compress the small elastic pin that secures the strap. Lift the old strap and extract the spring bar. Insert the new strap by aligning the hole at the end of the pin, compress the spring bar and secure it in the opposite lug. If you prefer to avoid any risk, the Casati Milano atelier offers this service with professional warranty.
Can I use an aftermarket strap on this Omega Constellation?
Yes, provided the strap is specifically sized for a 20mm lug width. Any artisanal strap compatible with this measurement fits perfectly on your 123.50.35.20.52.002. Milano Straps offers a wide range of 20mm straps in noble materials (alligator, calf, shell cordovan) ready for shipment and customizable. Ensure the strap is constructed with robust sartorial techniques, not cut generically, to enhance your Constellation.
How long does a leather strap last on an Omega Constellation?
The lifespan of a leather strap depends on the material, frequency of use, and care. A quality alligator strap typically lasts 4-6 years with average daily use. Calf can range from 2-4 years if frequently exposed to moisture. Shell cordovan, thanks to its intrinsic density, easily reaches 6-8 years while maintaining structural integrity. Milano Straps warrants all straps for 18 months against manufacturing defects. Avoid prolonged moisture, direct intense sunlight, and bending of the ends to maximize longevity.
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

