Breguet · Classique

Strap for Classique 5177 White Gold / Silver

The Classique 5177 White Gold / Silver takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

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Lug width18 mm
Case diameter38 mm
Reference5177BB/12/9V6
FamilyClassique
MovementBreguet caliber 777Q Hours, Minutes, Seconds | Date
CaseWhite Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Classique 5177BB/12/9V6

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Classique 5177BB/12/9V6, seen from the bench

The Breguet Classique 5177BB/12/9V6 embodies neoclassical tradition with a 38 mm white gold case featuring hand-executed guilloché dial. It houses the Breguet 777Q caliber, an automatic movement with 3 Hz frequency displaying hours, minutes, seconds, and date. The 18 mm lug width accommodates compatible straps precisely.

Frequently asked questions

What is the lug width of the Breguet Classique 5177BB/12/9V6?

The Breguet Classique 5177BB/12/9V6 is fitted with an 18 mm lug width. This is the internal measurement to be taken with a digital caliper in the groove between the two lugs, and it is the fundamental parameter for choosing a compatible strap.

What is the best strap for the Breguet Classique 5177BB/12/9V6?

For the white gold case and guilloché dial, the most suitable strap is in smooth belly or hornback alligator, preferably in black, midnight blue or tobacco brown. The crocodile naturally complements the texture of the guilloché. For a more formal version, polished box-calf veal is an excellent alternative with a beautiful patina over time.

How do you change the strap on the Breguet Classique 5177BB/12/9V6?

The strap is replaced using a dedicated springbar tool with a thin tip, inserted into the lateral hole of the lug to compress the spring bars. It is recommended to rely on a watchmaker or the Casati Milano atelier to avoid scratches on the white gold case, a relatively soft material prone to marks.

Are there aftermarket straps compatible with the Breguet Classique 5177BB/12/9V6?

Yes. Any strap with an 18 mm attachment is technically compatible. On milanostraps.it artisanal straps selected to fit this reference are available, with lengths and thicknesses designed for Breguet lugs. It is also possible to order a bespoke strap through the Casati Milano atelier with custom specifications.

How long does a leather strap last on a Breguet Classique 5177BB/12/9V6?

The durability depends on the quality of the leather and usage. A top-grade alligator strap with leather sole and correct finishing lasts on average 2-4 years with daily use. Box-calf veal has a similar lifespan but develops an interesting patina over time. Avoiding prolonged contact with water and sweat significantly extends the life of the strap.

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

The atelier's website: casatimilano.com