Technical Archive

Breguet
Classique 5177BA/29/AV0— lug 20mm

Breguet Classique 5177BA/29/AV0: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Classique 5177 Yellow Gold / White Enamel / Bracelet

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Breguet 5177BA/29/AV0
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

5177BA/29/AV0

Movement

Breguet caliber 777Q Hours, Minutes, Seconds | Date

The Heritage

The Breguet Classique 5177BA/29/AV0 is powered by the Breguet 777Q caliber with hours, minutes, seconds and date indication. The 18-carat yellow gold case features a silvered guilloché dial. The model presents the characteristic Breguet blued steel hands and Arabic numerals typical of the manufacture.

FAQ

What is the lug width of the Breguet Classique 5177BA/29/AV0?

The Breguet Classique 5177BA/29/AV0 is fitted with a 20mm lug width strap. This measurement refers to the strap width at the attachment points to the case. To confirm it, you can measure with a digital caliper between the two lugs of the reference. All compatible 20mm straps are available on milanostraps.it.

What is the best strap for the Breguet Classique 5177BA/29/AV0?

For a dress watch in yellow gold such as the Classique 5177BA/29/AV0, the ideal strap is in Hornback or Mississippiensis alligator with a polished or semi-polished finish, in chocolate, havana or burgundy colorways. These tones enhance the warmth of the 18-karat yellow gold without clashing with the guilloché dial. We advise against NATO or rubber straps, which are at odds with the formal character of the piece.

How do you change the strap on the Breguet Classique 5177BA/29/AV0?

Changing the strap on the Classique 5177BA/29/AV0 requires a fine-tipped spring bar tool. The gold lugs are delicate: it is recommended to protect the case with a soft cloth and work carefully to avoid scratches on the polished surface. If you lack experience, it is preferable to entrust the work to a watchmaker or contact the Casati Milano atelier for professional installation.

Are there aftermarket straps compatible with the Breguet Classique 5177BA/29/AV0?

Yes. Any strap with a 20mm lug width is technically compatible with the Breguet Classique 5177BA/29/AV0. Milano Straps offers a selection of artisanal 20mm straps in alligator leather, box calf and other materials, crafted to quality standards appropriate for a dress watch in this category. Available models can be found on milanostraps.it/collections/cinturini-orologi-per-misura-ansa-20mm.

How long does a leather strap last on a Breguet Classique 5177BA/29/AV0?

The lifespan of a leather strap depends on the quality of the leather, frequency of use, and care in maintenance. A high-quality alligator strap, used in rotation with other straps and kept away from moisture and perspiration, can last 3 to 7 years while maintaining a dignified patina. Milano Straps guarantees its straps for 18 months against manufacturing defects.

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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By appointment only · Milan

The atelier's website: casatimilano.com