Strap for PrimaLuna Automatic 26.5 Yellow Gold Diamond Leather

The Longines PrimaLuna L8.111.7.78.2 features a 6mm lug width, measured between the two spring bars that connect the strap to the case. This specific dimension is calibrated for this reference and should not be confused with the width of the previous strap—it represents the actual space on the case body that accommodates the new strap attachment.

For the PrimaLuna L8.111.7.78.2 in yellow gold, we recommend alligator in first-grade quality with natural tones (fawn, hazelnut), vegetable-tanned calf with developing patina (warm brown, black), or NATO canvas in neutral colours. Alligator offers sophisticated contrast with the precious metal while maintaining elegant proportions on a 6mm lug width.

Remove the spring bars from the current strap using a dedicated spring bar tool with gentle downward pressure to disengage them from the case holes. Insert the new spring bars into the replacement strap, then position them into the case lugs ensuring the strap sits perfectly straight before pressing to secure.

Yes, quality-certified aftermarket straps are compatible provided they strictly respect the 6mm lug width specification. Verify that the strap has been constructed with correct tolerances and exhibits no dimensional variations: even a 0.5mm discrepancy on such a compact lug can compromise aesthetics and attachment security.

A quality leather strap (alligator or vegetable-tanned calf) with regular maintenance has an average lifespan of 4-6 years under moderate use conditions. Patina development is natural and desirable; durability is primarily limited by fibre degradation caused by sun exposure, moisture, and mechanical wear of the attachment spring bars.