Technical Archive

Patek Philippe
Grand Complications 5004G-001— lug 20mm

Patek Philippe Grand Complications 5004G-001: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Perpetual Calendar Split Seconds Chronograph 5004 White Gold / White Arabic

Artisanal Note

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

Technical Specifications

Patek Philippe 5004G-001
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

5004G-001

Movement

Patek Philippe caliber CHR 27-70 Q Hours, Minutes, Small Seconds | Date, Day, Leap Year, Month, Perpetual Calendar | Chronograph, Column wheel, Rattrapante

The Heritage

The Patek Philippe Perpetual Calendar Split Seconds Chronograph ref. 5004G-001 in 18-karat white gold combines a perpetual calendar and split-seconds chronograph in a single movement. The case measures 36.70 mm in diameter with a 20 mm lug width. Powered by the caliber CHR 27-70 Q, featuring a column wheel mechanism, the watch displays hours, minutes, seconds, date, day, month, and leap year indication on a champagne-silver dial. The perpetual calendar is programmed until the year 2100.

FAQ

What is the exact lug width of the Patek Philippe Grand Complications 5004G-001?

The lug width of the 5004G-001 is 20 millimetres, measured between the primary and secondary attachment points on the case. This metric is Patek Philippe's historical standard for dress watches and ensures precise compatibility with artisanal-quality straps. We recommend verifying with a digital caliper before any purchase.

Which strap is most suitable for the white gold Patek Philippe 5004G-001?

Alligator with vegetable tanning is the natural choice: orderly scales create a geometry that harmonises with the watch's rigorous design, whilst vegetable tanning develops patina over time. Shell cordovan offers a bolder alternative thanks to its pronounced grain and polishing capability. For maximum elegance, select deep black or tobacco brown.

How should the strap on a Patek Philippe 5004G-001 be changed safely?

Always entrust a specialist to avoid case damage. Casati Milano offers in-atelier strap changing on appointment, with warranty and direct consultation. Alternatively, use a dedicated spring bar tool, gently pressing only one elastic pin at a time, without force.

Is an aftermarket 20mm strap compatible with the 5004G-001?

Yes, provided the strap has been constructed specifically for 20mm lug width. Artisanal straps from Casati Milano or specialised manufacturers guarantee metric precision and respect for Patek Philippe's historical proportions. Avoid generic 'one-size-fits-all' straps.

How long does a quality leather strap last on the 5004G-001?

A premium alligator or shell cordovan strap, under normal wear conditions, maintains structural integrity for 4–6 years. Vegetable-tanned leather develops patina rather than degrading, enriching its appearance over time. Longevity depends on usage frequency, humidity exposure, and periodic maintenance with specialised creams.

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 →

By appointment only · Milan

The atelier's website: casatimilano.com