Strap for Prestige Gold Oval 21.3

The lug width of the Longines L4.224.7.37.6 is 12mm. This specification is particular to this compact model: the distance between the two horizontal lugs on the case is precisely 12mm. This dimension, less common in contemporary watchmaking, excludes universal straps and requires deliberate selection from specialised suppliers.

For this yellow gold model, the ideal strap is alligator with vegetable tanning (black, dark brown or cognac). The elegant and austere proportions of the case demand materials that age gracefully and respect an aesthetic hierarchy: satin vitello or shell cordovan are valid alternatives. A yellow gold deployante is essential to complete the visual harmony.

Changing the strap requires a specific tool (spring bar tool) and caution. Position the watch on a soft cloth, locate the horizontal pins on the lugs, gently compress the spring mechanism with the tool, remove the pin, take off the old strap and insert the new one, ensuring the pin is fully locked. We recommend professional assistance to avoid damage to the case.

Yes, the L4.224.7.37.6 is compatible with premium aftermarket straps provided they are manufactured with a 12mm lug attachment. Specialist artisanal strap suppliers offer options in alligator, vitello, shell cordovan and other noble materials. It is essential to verify that the strap has been tailored for this specific lug width.

Durability depends on material and usage. An alligator strap with vegetable tanning typically lasts 4-6 years in daily use, evolving aesthetically and acquiring a characteristic patina. Vitello has similar longevity. Shell cordovan, thanks to its density, can reach 6-8 years. Regular maintenance—gentle cleaning, drying after water contact, conditioning with natural creams every 12-18 months—significantly extends strap life.