Patek Philippe · Grand Complications

Strap for Perpetual Calendar Split-Seconds Chronograph 5204 White Gold / Olive

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
Reference5204G-001
FamilyGrand Complications
MovementPatek Philippe caliber CHR 29-535 PS Q hours, minutes, small seconds, day / Night Indication | date, day, leap year, month, perpetual calendar | Chronograph, column wheel, Rattrapante | moonphase
Year2021
CaseRose 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 Grand Complications 5204G-001

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Grand Complications 5204G-001, seen from the bench

The Patek Philippe Grand Complications 5204G-001 is a 40.2 mm rose gold watch combining a perpetual calendar, split-seconds chronograph, and day-night indicator. It houses the manual-wind caliber CHR 29-535 PS Q with 456 components and 51 jewels, developed and assembled in Geneva. The 20 mm lug width accommodates a wide range of leather and rubber strap solutions.

Frequently asked questions

What is the lug width of the Patek Philippe Grand Complications 5204G-001?

The lug width of the Patek Philippe Grand Complications 5204G-001 is 20 mm. This specification is precise to this model and must be measured correctly from the inner edge of one lug to the inner edge of the other, excluding the spring bars.

Which strap is most suitable for the Patek Philippe 5204G-001?

The most suitable straps are Mississippi alligator with medium-fine grain, shell cordovan for a natural patina that develops over time, vegetable-tanned calf leather for summer environments, and FKM rubber for more dynamic use. The choice depends on occasion and personal aesthetic preference.

How do I change the strap on my Patek Philippe Grand Complications?

The strap is changed by removing the lugs from the case using a specialised tool called a spring bar removal tool. For the 5204G-001, we recommend trusting a certified watchmaker or Casati Milano's service, which guarantees precision and case protection during the operation.

Can I use an aftermarket strap on a Patek Philippe 5204G-001?

Yes, provided the strap has a certified 20 mm lug width. We recommend choosing straps made by artisans specialising in fine watchmaking, as the quality of leather and construction must reflect the standard of the 5204G-001.

How long does a leather strap last on a Patek Philippe?

The lifespan of a leather strap depends on the material, use, and maintenance. A quality alligator or cordovan strap, with appropriate care (avoiding prolonged exposure to moisture and direct sunlight), can last 3-5 years with daily use. Casati Milano provides an 18-month warranty on 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.

Request an appointment →

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