Strap for PrimaLuna Automatic 26.5 Stainless Steel / MOP / Bracelet

The lug width of the Longines PrimaLuna L8.111.4.87.6 is 6mm (six millimetres). This miniaturized measurement is a direct consequence of the 26.50mm case proportions. To verify it, use a digital calliper positioned perpendicularly between the internal lugs of the attachment, without forcing. This measurement excludes standard 18mm or 20mm straps, requiring specialist suppliers.

For the PrimaLuna L8.111.4.87.6, French alligator represents the maximalist choice: its natural grain offers texture that creates light-play complementary to the mother-of-pearl dial, and vegetable tanning develops patina over time. Alternatively, Hermès calf—thin grain with minimal flower—offers pure constructive minimalism. For versatility, a silk NATO with tight weave permits transition between formal and casual contexts.

Strap replacement requires two tools: a spring bar remover and a flat surface. Position the watch face-down. Insert the spring bar remover into the lateral access hole of the lug, gently lifting the spring. Simultaneously, grip the strap and pull in the opposite direction to free the end. Repeat on the other side. To install the new strap, align the lug pin to the hole and press until the spring clicks into place. Verify that both sides are correctly secured before wearing.

Yes, the L8.111.4.87.6 accepts aftermarket straps specifically constructed for 6mm lugs. Mechanical compatibility is guaranteed if the strap features lugs (or adapter loops) calibrated for 6mm. Standard 18mm or 20mm straps cannot be used without compromising the structural integrity of the attachment. Always verify with the supplier specific compatibility before ordering, providing the reference L8.111.4.87.6.

A high-quality natural leather strap (alligator, calf, shell cordovan) typically lasts 3-5 years with moderate daily wear and regular maintenance. Longevity depends on factors such as: wearing frequency, humidity exposure, body perspiration, protection from direct light. Vegetable tanning offers greater longevity than industrial tanneries. Typical wear manifests with fraying of the inner edge and loss of flexibility in the keeper area. A well-maintained strap—regularly cleaned with soft cloths and stored in a dry environment—can exceed five years. In the bespoke segment, restoration possibility further extends service life.