Strap for Prestige Gold 15 Oval Diamond

The lug width of the L6.110.7.77.6 is 20mm. This measurement should be verified by measuring the distance between the lug pins, which is the critical dimension for purchasing a compatible strap. The strap keeper (calastrello) must fit precisely on the Longines pins, typically 1.5mm in diameter.

For the L6.110.7.77.6, we recommend alligator leather in dark shades (black, cognac brown) or shell cordovan for those seeking greater structural rigidity. Both materials enhance the precious nature of the white gold case. Vegetable tanning ensures natural ageing and compatibility with sensitive skin. Avoid straps too thick that would not follow the case proportions.

The strap is changed by inserting a thin tool (pin remover) into the holes on either side of the lug, gently pushing the pins outward. The L6.110.7.77.6 pins have a standard 1.5mm diameter. Once the old strap is removed, align the new one and reinsert the pins with light pressure. Avoid abrupt movements that could damage the lug housing in gold.

Yes, provided the strap is specifically dimensioned for the 20mm lug width. Verify that the keepers accommodate 1.5mm pins without excessive play. High-quality aftermarket straps, such as those offered by Milano Straps, maintain the same precision standards as original straps. For optimal experience, contact Casati Milano atelier for bespoke customisation.

A high-quality leather strap, made with vegetable tanning, maintains structural and aesthetic performance for 3-5 years of regular use. Alligator tends to last longer than shell cordovan due to its natural flexibility. Lifespan depends on exposure to moisture, perspiration and ambient humidity. Periodic maintenance (gentle cleaning, water-repellent treatment every 6-12 months) significantly extends strap life.