Omega · Constellation

Strap for Constellation Quartz 27 Brushed Red Gold / Diamond / Diamond

Takes 14 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width14 mm
Case diameter27 mm
Reference123.55.27.60.99.004 (aka: 12355276099004)
FamilyConstellation
MovementOmega caliber 1376 hours, minutes
CaseRed Gold

Spring bar

Spring bars for Omega

The right category for this model · choose the 14 mm size

The Constellation 123.55.27.60.99.004 (aka: 12355276099004), seen from the bench

The Omega Constellation 123.55.27.60.99.004 is a 27mm brushed red gold dress watch from the iconic Constellation collection, introduced in 1952. It features the characteristic griffes on the bezel, an eight-pointed star on the caseback, and a manual-wind Omega caliber 1376 movement with hour and minute markers only. The 18k red gold case develops a natural patina over time, and the 14mm lug width accommodates replacement straps while maintaining the watch's compact proportions and aesthetic coherence.

Frequently asked questions

What is the lug width of the Omega Constellation 123.55.27.60.99.004?

The lug width of this Constellation is 14mm. This measurement is critical for strap compatibility: only 14mm straps will ensure precise pin insertion into the case lugs. Measure the distance between the two pins with a digital caliper to confirm.

Which strap do you recommend for the Constellation 123.55.27.60.99.004 in rose gold?

Cognac or dark brown alligator is the noblest choice: the fine grain complements the golden reflection of the case without competing. Alternatively, vegetable-tanned calfskin offers a minimalist approach, developing over time a patina that mirrors that of rose gold. For contemporary chromatic contrast, a navy blue alligator introduces a fascinating duality.

How do you change the strap on an Omega Constellation 27mm?

Position the watch on a soft cloth with the lugs facing upward. Using a non-pointed spring bar tool, apply gentle pressure to the small hole or side slot of the pin. The internal spring will compress, releasing the pin from one side. Remove the pin completely and repeat on the other side. Install the new strap by reversing the procedure.

Are there 14mm aftermarket straps compatible with the 123.55.27.60.99.004?

Yes. On milanostraps.it you will find a dedicated collection of 14mm straps ready for shipment, customizable in material, color, size and details such as initials and stitching thread. The Casati Milano atelier also creates fully bespoke straps with personal leather consultation.

How long does a leather strap last on a vintage watch like the Constellation?

A quality leather strap (alligator, calfskin, cordovan) typically lasts 3-5 years with moderate daily wear. On occasionally worn watches, the lifespan extends to 7-10 years. Vegetable tanning develops attractive patina over time, extending the perceived value. Exposure to moisture, water and heat accelerates aging. Casati Milano offers an 18-month warranty on all handcrafted 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