Strap for Annual Calendar 4948 White Gold Black Mother of Pearl

The lug width of the Patek Philippe Complications 4948G-010 is 20 millimetres. This is the distance between the two lugs (metal pins) to which the strap is attached. This dimension is specific to this model and ensures perfect fit to the white gold case. To verify it, measure with a calliper the horizontal space between the lugs: it must be exactly 20 mm.

For the 4948G-010, we recommend alligator leather with vegetable tanning in neutral tones (white, pearl grey, dark cognac). Alligator leather dialogues beautifully with white gold thanks to its characteristic grain, which mirrors the sophistication of the case. Alternatively, structured calf leather in taupe or brown offers daily practicality without aesthetic compromise. NATO or sports fabrics are not recommended: this model favours formal elegance.

The strap is changed by means of the lugs (metal pins) at the ends of the case. Using a dedicated tool (spring bar tool), you push the pin from one side to extract it completely. Remove the old strap and insert the new one, aligning its lug width with the holes. Reinsert the pin by applying pressure until it is fully engaged. We recommend having this operation carried out by a professional watchmaker to avoid damage to the gold case.

Yes, it is absolutely possible and recommended. A quality 20mm aftermarket strap (such as those handcrafted by Casati Milano) offers aesthetic customisation, versatility of use and superior value for money compared to original Patek straps. The important thing is to verify that the lug width is exactly 20 millimetres and that the leather is of excellence: alligator, calf or shell cordovan with impeccable tannery guarantees durability and prestige.

A quality artisanal leather strap (with vegetable tanning and noble materials such as alligator or calf) lasts between 3 and 5 years if worn daily, up to 7-10 years with moderate or seasonal use. Longevity depends on exposure to sweat, moisture and UV rays. Regular maintenance — gentle cleaning and application of specific balms — significantly extends the life of the strap. Casati Milano offers an 18-month warranty on manufacturing defects for each artisanal strap created.