Omega · Constellation

Strap for Constellation Co-Axial 35.5 Red Gold / Silver / 160 Years

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter35 mm
Reference111.50.36.20.52.001
FamilyConstellation
MovementOmega caliber 2500 hours, minutes, seconds | date | co-Axial escapement, chronometer
Year2008
CaseRed Gold

Recommended spring bar

Spring bars Omega 18mm — single diameter

Technical match for lug width and diameter · lug 18 mm · Ø 1.8 mm

All Omega spring barsOpen →

Straps for the Constellation 111.50.36.20.52.001

Selected for the 18 mm lug width

All 18 mm straps →

The Constellation 111.50.36.20.52.001, seen from the bench

The Omega Constellation Co-Axial 111.50.36.20.52.001 represents Swiss watchmaking excellence, originally designed in 1952. The 35.5mm red gold case features the iconic four "griffes" embracing the bezel, paired with a champagne dial and luminescent indices. Powered by the Omega caliber 2500 co-axial movement with chronometer escapement, it delivers exceptional stability and durability. The 18mm lug width is precisely proportioned to the case, ensuring optimal visual balance and wearability. Part of the Constellation 160 Years collection.

Frequently asked questions

What is the exact lug width of the Omega Constellation 111.50.36.20.52.001?

The lug width of the Omega Constellation 111.50.36.20.52.001 is 18mm. This is the distance that separates the two lugs of the case. Any compatible strap must have exactly 18mm width to install correctly without damaging the delicate lugs.

What is the best strap material for this Constellation in rose gold?

Alligator remains the ideal choice for the Constellation 111.50.36.20.52.001 in rose gold: its fine and regular grain reflects the formal perfection of the watch. Alternatively, shell cordovan with vegetable tanning offers a patina that becomes more refined over time, creating a sophisticated aesthetic pairing. Vegetable-tanned calf is a versatile solution for those who desire seasonal rotation.

How do I change the strap on my Omega Constellation without damaging the case?

Use a dedicated tool (spring bar tool) to extract the lugs from the case lugs. Never use screwdrivers or sharp objects that could scratch the rose gold. Gently insert the new strap by aligning the leather holes with the lugs, then reinsert the lugs until the locking click. If you are unsure, consult a certified watchmaker.

Can I mount an aftermarket strap on an Omega Constellation 111.50.36.20.52.001?

Yes, provided the strap is specifically designed for <a href="/pages/termine-glossario/misura-ansa">18mm lug width</a>. Aftermarket straps offer greater aesthetic versatility compared to the integrated Manhattan bracelet. Choose specialized craftsmen who guarantee construction precision and materials of excellence, with no compromises on quality.

How long does a leather strap last on a watch worn daily?

A high-quality alligator or cordovan strap lasts on average 2-4 years with daily wear, depending on sun exposure, humidity and care. The leather should be cleaned regularly with a damp cloth and stored in a dry place. Vegetable-tanned cordovan, although more durable, still develops patina and requires maintenance. An 18-month warranty is standard for custom-made artisanal straps.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only