Technical Archive

Patek Philippe
Calatrava 5177G-011— lug 20mm

Patek Philippe Calatrava 5177G-011: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Calatrava 5177G Italian Scenes / Ponte Vecchio

Artisanal Note

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

Technical Specifications

Patek Philippe 5177G-011
Lug Width
20 mm

The essential strap measurement.

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Reference

5177G-011

Movement

Patek Philippe caliber 240 Hours, Minutes

The Heritage

The Calatrava represents Patek Philippe's dress watch line, characterized by an essential design with hour and minute indication. Reference 5177G-011 is equipped with the ultra-thin self-winding caliber 240. The watch features 20mm lugs for the strap.

FAQ

What is the exact lug width of the Patek Philippe Calatrava 5177G-011?

The lug width of the Calatrava 5177G-011 is 20 millimetres. This is the distance between the two spring bars that attach the strap to the case lugs. Precision is critical, as even a 0.5mm difference will create play or prevent proper installation.

Which strap material is most suitable for the Calatrava 5177G-011 in white gold?

For white gold, alligator or shell cordovan are the most harmonious choices. Both offer elegant grain and a patina that ages beautifully. Alternatively, vegetable-tanned calf leather in burgundy or dark brown provides restrained colour whilst maintaining maximum versatility.

How do I change the strap on the Patek Philippe Calatrava 5177G-011?

The strap is changed by extracting the spring bars with a specialised, delicate tool. If inexperienced, consult a certified watchmaker. The passant width of the new strap must be compatible with the case's 20mm lugs, otherwise the strap will not secure properly.

Can I use a generic aftermarket strap designed for 38mm watches on the Calatrava 5177G-011?

No. The Calatrava 5177G-011 requires a strap with precise 20mm lug width. Many 'universal' straps are manufactured at 19mm or 20.5mm. An incompatible strap causes vibration, risks detachment, and compromises the watch's aesthetic. Consult specialised manufacturers who respect dimensional tolerance.

What is the average lifespan of a leather strap on the Calatrava 5177G-011?

A quality leather strap (alligator, shell cordovan, vegetable-tanned calf) lasts 5–8 years of daily wear. Lifespan depends on sun exposure, humidity, and frequency of strap changes. Signs of ageing (shading, patina) are desirable in noble leathers; replacement becomes necessary only if the leather cracks or the passant fails.

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