Strap for Perpetual Calendar 5320 White Gold / Cream

The Patek Philippe Grand Complications 5320G-001 features a lug width of 20 millimetres. This measurement refers to the internal distance between the two lugs where the strap attaches to the case. To verify this correctly, remove the current strap and measure with a calliper the distance from inner wall to inner wall. The 20-millimetre width ensures balanced visual proportions relative to the 40-millimetre case diameter.

For the 5320G-001 in white gold, the ideal strap is natural alligator with a fine grain texture, which develops a beige-champagne patina over time. Shell cordovan represents a sophisticated alternative for those preferring a polished surface and progressive softness. Vegetable-tanned calf offers consistent texture and stable colours (brown, burgundy, black). Rubber and NATO straps are not recommended, as they appear visually incongruous with the precious nature of white gold.

Changing the strap requires specific tools: a spring bar tool or professional extractor to remove the elastic pins holding the strap to the lugs. After removing the worn strap, insert the new spring bars into the loops of the new strap, then align and press until you hear a click. For precision work, it is advisable to consult a professional watchmaker or specialised service such as Casati Milano, which oversees every phase of production.

Yes, thanks to the standardised 20-millimetre lug width, the 5320G-001 is compatible with quality certified aftermarket artisanal straps. Choose suppliers that guarantee premium leathers (alligator, shell cordovan, vegetable-tanned calf) and hand-finished construction. Milanostraps offers an exclusive selection of 20-millimetre compatible straps, with personalisation options via Casati Milano directly at the Milan atelier.

A premium leather strap (alligator, shell cordovan, vegetable-tanned calf) with moderate daily use typically lasts 4-6 years before replacement is required. Durability depends on exposure to perspiration, humidity and maintenance level. Regular cleaning with a soft damp cloth and application of protective creams every 6-8 months significantly extend service life. Casati Milano straps include an 18-month warranty on manufacturing defects and are constructed to withstand intensive use whilst maintaining elasticity and elegance.