Patek Philippe · Grand Complications

Strap for Split-Seconds Chronograph 5950 Stainless Steel / Blue / Bracelet

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter37 mm
Reference5950/1A-010
FamilyGrand Complications
MovementPatek Philippe caliber CHR 27-525 PS hours, minutes, small seconds | Chronograph, column wheel, Rattrapante
Year2014
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 Grand Complications 5950/1A-010

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Grand Complications 5950/1A-010, seen from the bench

The Patek Philippe 5950/1A-010 split-seconds chronograph features a 37mm stainless steel case with an 18mm lug width. This model represents a notable chapter in contemporary Grand Complications, embodying Geneva watchmaking precision. The split-seconds function—rattrapante—showcases technical justification without aesthetic compromise, making this timepiece an intentional anomaly in the luxury segment.

Frequently asked questions

What is the lug width of the Patek Philippe Grand Complications 5950/1A-010?

The lug width is 18mm. This specific measurement allows you to fit compatible straps and bracelets to the case lugs. It is essential to verify this width before purchasing a replacement strap to ensure proper fit on the case spring bars.

What is the best strap for the Patek Philippe 5950/1A-010?

For this steel sports chronograph, we recommend Mississippi alligator with polished or grain finish, or premium calf leather with vegetable tanning for those preferring a more natural aesthetic. Alligator offers durability and develops patina over time; calf ensures comfort and softness. The choice depends on daily wear or formal occasions.

How do I change the strap on my Patek Philippe 5950/1A-010?

The strap is mounted via spring bars positioned beneath the case. Use a spring bar tool to compress the pins, remove the worn strap, and insert the new one. If inexperienced, consult a qualified watchmaker. With Casati Milano, you can follow your strap customisation via WhatsApp and receive mounting instructions.

Can I use an aftermarket strap on a Patek Philippe 5950/1A-010?

Yes, provided it is compatible with the 18mm lug width. A high-quality artisanal strap, crafted with premium leather and manual techniques, is not only compatible but further elevates the watch. Milanostraps offers a curated selection of 18mm straps specifically designed for chronographs of this calibre.

How long does a leather strap last on a watch like the 5950/1A-010?

A quality leather strap with vegetable tanning and artisanal construction typically lasts 3-5 years with daily wear, developing an attractive patina over time. Longevity depends on humidity, sun exposure, and frequency of use. Casati Milano straps include an 18-month warranty covering 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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Casati Milano · Via XX Settembre 15, Milan · by appointment only