Longines · PrimaLuna
Strap for PrimaLuna Automatic 26.5 Yellow Gold Diamond Leather MOP
Takes 6 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The PrimaLuna L8.111.7.87.2 (aka: L81117872), seen from the bench
Frequently asked questions
What is the lug width of the Longines PrimaLuna L8.111.7.87.2?
The Longines PrimaLuna L8.111.7.87.2 features a lug width of 6mm. This dimension is characteristic of ladies' timepieces in this size category and is essential for selecting a compatible aftermarket strap. Accurate measurement is performed using a digital calliper from the inner point of one lug to the other.
What is the best strap for the Longines PrimaLuna L8.111.7.87.2?
For this yellow gold model, we recommend alligator in taupe or tope brown tones, or shell cordovan, both harmonizing perfectly with the material's warm character. Havana-coloured alligator paired with a yellow gold deployante clasp creates aesthetic balance. Contemporary alternatives include vegetable-tanned calf leather with polished finishing. Selection depends on intended use and colour contrast preference.
How do you change the strap on the Longines PrimaLuna L8.111.7.87.2?
Strap replacement requires specialist tools: a spring bar tool or watchmaker's lever. Insert the tool into the small lateral slot of the attachment pin, gently lift until the internal spring is released, then extract the pin. Repeat for both lugs. Install the new strap by reversing the procedure. If inexperienced, consult a professional watchmaker to prevent case damage.
Which aftermarket straps are compatible with the Longines PrimaLuna L8.111.7.87.2?
All straps with a 6mm lug width are compatible with your PrimaLuna. On milanostraps.it you will find a comprehensive collection of 6mm straps in various materials and colours. Bespoke straps from the Casati Milano atelier offer complete customisation with leather selection, engraved initials, and personalised stitching thread.
What is the lifespan of a leather strap for the Longines PrimaLuna L8.111.7.87.2?
An artisanal quality leather strap, with moderate daily use, maintains structural integrity for 4-7 years. Alligator and shell cordovan age more gradually than calf leather. Durability depends on moisture exposure, frequency of use, and maintenance. Casati Milano straps benefit from an 18-month warranty covering manufacturing defects and can be restored through professional refurbishment.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
