Strap for PrimaLuna Automatic 26.5 Yellow Gold Diamond MOP

The lug width of the Longines PrimaLuna L8.111.7.87.6 is 6mm (six millimetres). This measurement is specific to this model and has been calculated to maintain harmonious proportions on the 26.50mm case diameter. When purchasing a replacement strap, you must verify that the width corresponds exactly to 6mm, with a maximum manufacturing tolerance of ±0.15mm.

For the Longines PrimaLuna L8.111.7.87.6 in yellow gold, we recommend a strap in medium or dark brown alligator, or Italian leather with vegetable tanning in honey-brown shades. Alligator offers formal elegance and optimal aesthetic compatibility with the precious metal; vegetable-tanned calf leather develops a patina that ages simultaneously with the gold. For informal contexts, a black or navy-blue rubber strap represents a coherent sportwear alternative.

Strap replacement requires a specific tool to compress the lugs and slide the horizontal pins that secure the strap to the case. This instrument is available from professional watchmakers or the Casati Milano atelier. It is not advisable to attempt replacement without experience, as improper alignment could damage the yellow gold case lugs. Casati Milano offers a rapid replacement service by appointment in Milan.

Yes, you can use aftermarket straps of equal or superior quality, provided the lug width is exactly 6mm. Milano Straps offers a selection of compatible straps in various leathers (alligator, calf, shell cordovan) and colours, customisable to precise measurement. All our straps are handcrafted and subjected to stringent quality control to guarantee mechanical compatibility and durability over time.

The lifespan of a leather strap depends on the intensity of use and the quality of the material. A strap in quality alligator or calf leather with vegetable tanning has a useful life of 5 to 10 years with regular use. Natural leather ages nobly; after 2-3 years it develops a characteristic patina that increases its aesthetic value. Milano Straps provides an 18-month warranty on all handcrafted straps and offers restoration and regeneration services to extend the life of your strap.