Patek Philippe · Complications

Strap for Annual Calendar Chronograph 5960 Stainless Steel / Leicester

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

Lug width20 mm
Case diameter41 mm
Reference5960/1A-011
FamilyComplications
MovementPatek Philippe caliber CH 28-520 IRM QA 24H Day / Night Indication, Hours, Minutes | Annual Calendar, Date, Day, Month | Chronograph, Column wheel, Flyback | Power Reserve Indicator
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the Complications 5960/1A-011

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Complications 5960/1A-011, seen from the bench

The Complications reference 5960/1A-011 combines flyback chronograph functions with annual calendar and day/night indication. It is powered by the automatic caliber CH 28-520 IRM QA 24H with column wheel and power reserve display. The movement integrates the display of hours, minutes, date, day, month and chronograph with flyback function.

Frequently asked questions

What is the lug width of the Patek Philippe Complications 5960/1A-011?

The lug width of the Patek Philippe Complications 5960/1A-011 is 20 millimetres, measured between the inner lugs of the case. This measurement must be respected strictly when choosing a replacement strap: a 19mm strap would be unstable, whilst a 21mm strap would not fit the case attachments.

Which strap material is recommended for the 5960/1A-011?

For this stainless steel dress-sport model, alligator is the most refined choice, ideally in dark brown or blue tones. Vegetable-tanned calf leather offers a patina that develops authentically over time, whilst shell cordovan is perfect for those seeking visible and fascinating strap ageing.

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

The change requires two specific tools: a spring bar tool and a pair of tweezers for the pins. Insert the tool into the small side slot of the attachment lug, press inward to compress the spring, then extract the pin. Repeat from the other side. Position the new strap and reinsert the pins using the same procedure in reverse.

Can I use an aftermarket compatible strap with the 5960/1A-011?

Absolutely. A quality artisanal strap, provided it respects the 20-millimetre lug width and is crafted from premium materials such as alligator, calf or shell cordovan, is perfectly compatible and does not diminish the watch's value. It represents an opportunity for personalisation and versatility.

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

Durability depends on the material and usage. A high-quality alligator or vegetable-tanned calf lasts approximately 5-8 years with daily wear. Shell cordovan, owing to its dense fibrous structure, can exceed 10 years. In all cases, regular maintenance and protection from moisture significantly extend the strap's lifespan.

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