Strap for La Grande Classique Quartz 37 Stainless Steel

The lug width of the Longines La Grande Classique L4.766.4.73.6 is 20mm. This measurement represents the space between the lugs of the case where the strap is attached. It is essential to verify that the strap is precisely 20mm wide to ensure a secure fit without lateral play and to preserve the aesthetic proportions of the case.

For this classic model, superior-quality alligator in dark brown or black tones is the most formally legitimate choice. Excellent alternatives include vegetable-tanned calf leather, which develops a noble patina over time, and shell cordovan for those seeking longevity and chromatic depth. The choice depends on the context of use and personal tactile preferences.

To change the strap, acquire a spring bar tool or consult a watchmaker. Locate the small pins (spring bars) that hold the strap to the lugs. Gently press one pin towards the centre of the case to release the strap, then repeat on the other side. Insert the new 20mm strap by aligning the holes, then snap the pins back until you feel the safety click.

Yes. On milanostraps.it you will find artisanal 20mm straps compatible with the Longines La Grande Classique, available in various leathers (alligator, calf, shell cordovan) and colours. They are customisable in length, with the option to add initials and choose the stitching colour.

Durability depends on the material and usage. Mediocre-quality alligator lasts 2-3 years; vegetable-tanned calf 3-5 years if well maintained; shell cordovan can exceed 7-10 years. Exposure to sunlight, sweat and water accelerates ageing. A strap from milanostraps.it includes an 18-month warranty and can be restored at the Casati Milano atelier.