Patek Philippe · Grand Complications

Strap for Sonnerie Minute Repeater Platinum / Black

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

Lug width20 mm
Case diameter45 mm
Reference6301P-001
FamilyGrand Complications
MovementPatek Philippe caliber GS 36-750 PS IRM Hours, Minutes, Small Seconds, Jumping Seconds | Moonphase | Grande Sonnerie, Minute Repeater, Petite Sonnerie | Crown Position Indicator
CasePlatinum

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 6301P-001

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Grand Complications 6301P-001, seen from the bench

The Patek Philippe Grand Complications ref. 6301P-001 Sonnerie Minute Repeater represents the pinnacle of mechanical complexity, featuring the caliber GS 36-750 PS IRM with over 1,400 components. The watch incorporates grande sonnerie, petite sonnerie, minute repeater, one-minute tourbillon, and jumping seconds. The platinum case measures 44.80 mm in diameter with 20 mm lug width and offers 120 hours of power reserve beating at 4 Hz. Water resistance is 30 meters, and the black dial features white gold applied indices.

Frequently asked questions

What is the exact lug width of the Patek Philippe Grand Complications 6301P-001?

The lug width of the Patek Philippe 6301P-001 is 20 millimetres. This dimension is measured by placing a digital calliper perpendicular to the lug seats, reading the external value. Any deviation, even minimal, risks lateral play and mechanical stress on the case.

What is the best strap material for the Patek Philippe 6301P-001?

Alligator remains the ideal choice for this reference: its regular grain texture emphasises the formal purity of the platinum case, whilst its lightness guarantees extended wearing comfort. As an alternative, shell cordovan offers superior durability and natural lustre. Both materials develop patina over time, creating visual dialogue with aged platinum. We do not recommend synthetic or rubber straps, which fail to reflect the intrinsic value of the movement.

How do you change the strap on a Patek Philippe watch with 20mm lugs?

Strap changes must be executed by an expert watchmaker or at the Casati Milano atelier. Never attempt to force the lug from the case: insert a flat, rounded tool into the lug seat, applying gradual and constant downward pressure. The procedure demands millimetric precision to avoid scratches on the platinum case. Casati Milano offers a by-appointment service that includes chromatic consultation and follow-up during execution.

Does an aftermarket strap of equivalent quality exist for the 6301P-001?

Yes, provided it is crafted from materials of excellence — tannic alligator, shell cordovan from certified sources, vegetable-tanned calf — and constructed using hand-stitching techniques. The 20mm lug width is a standard, but the quality of finishing, internal gluing and deployante buckle make the difference. Milanostraps.it provides a curated selection of 20mm straps specifically vetted for compatibility and aesthetic cohesion with the model.

What is the average lifespan of a leather strap for the Patek Philippe 6301P-001?

A quality leather strap, with vegetable or tannic tanning, lasts on average 3-5 years of daily wear, depending on ambient humidity, intensity of use and maintenance care. Alligator and shell cordovan tend towards the upper end of the range. Periodic maintenance — cleaning with a damp cloth, rapid drying, conditioning every 6-12 months with specific balm — extends service life significantly. Casati Milano supplies precise care instructions with each strap and offers reconditioning services by appointment.

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