Strap for PrimaLuna Quartz 23 Pink Gold Leather Diamond MOP

The lug width of the Longines PrimaLuna L8.109.9.87.2 is 6 millimetres. This measurement is specific to this compact model and is crucial when selecting a strap: a wider lug width would not align proportionally with the 23mm case diameter, creating visual imbalance. To verify the measurement, place a tailor's measuring tape perpendicular to the case at the attachment point of the suspension lugs, measuring only the strap width and excluding the case metal.

The optimal strap for the PrimaLuna depends on intended use and aesthetic preferences. Alligator leather represents the most coherent luxury solution with the rose gold case: the fine and regular grain of the skin dialogues naturally with the precious metal. For daily versatility, a vegetable-tanned calf leather in dark brown offers robustness and progressive patina over time. Shell cordovan in cognac develops a fascinating natural lustre whilst maintaining resistance in intensive use. For informal contexts, textured rubber Tropic ensures thermoregulating comfort. The final choice should balance the case's preciousness with the occasions of wear.

Changing the strap on a Longines PrimaLuna L8.109.9.87.2 requires a specific tool: a lug remover tool or a soft-faced hammer with a PTFE tip. Position the watch on a padded surface, orient the strap downward, and locate the suspension pin securing the strap to the case. With gentle and perpendicular pressure, push the pin until it slides out of its seat. Repeat for both sides. Align the new strap's holes with the lug slots and reinserting the pins until you hear a faint click. Avoid striking blows that could damage the rose gold case: precision supersedes speed.

Aftermarket straps compatible with the Longines PrimaLuna L8.109.9.87.2 must feature an exact 6-millimetre lug width. Not all manufacturers offer this dimension: most common brands produce predominantly 16mm, 18mm, 20mm, and 22mm sizes. MilanoStraps supplies a specialised collection of 6mm straps, crafted in alligator, calf, shell cordovan, and rubber, customizable in size, initials, and stitching thread. The Casati Milano atelier also creates bespoke solutions featuring rare leathers and exclusive finishes, ensuring perfect compatibility and artisanal quality.

The lifespan of a leather strap depends on construction quality, material type, and intensity of use. A superior-quality alligator or shell cordovan strap with hand-stitching and proper finishing maintains functionality for 3–5 years under regular daily wear. A vegetable-tanned calf leather, due to its more open fibrous structure, tends to wear more rapidly (2–4 years). Exposure to sunlight, intense heat, and humidity accelerates leather ageing, as does usage in highly humid contexts. Straps crafted by Casati Milano include an 18-month guarantee against manufacturing defects and latent flaws. Regular maintenance (cleaning and protection with specialist balms) significantly extends the functional and aesthetic lifespan of the strap.