Strap for Master Collection Date 29 Stainless Steel

The lug width of the Longines Master Collection L2.257.4.77.3 is 15mm. This dimension is specific to the Master Collection's ladies' models from Longines and ensures harmonious proportions on the 29mm case. Measure the internal distance between the two case lugs to verify compatibility with aftermarket straps.

For the Longines Master Collection L2.257.4.77.3, fine leathers such as alligator, vegetable-tanned calf, and shell cordovan are recommended. Alligator amplifies the sophistication of the guilloché dial; calf develops ageing patina over time; NATO fabric offers daily sporting versatility. Choice depends on intended use and personal aesthetics.

To change the strap on the Longines Master Collection L2.257.4.77.3, use a dedicated tool (spring bar tool) to extract the small metal pins connecting the original strap to the case lugs. Once removed, the strap slides away easily. Align the new strap with the lugs and reposition the pins until they click into place. If uncertain, the Casati Milano atelier offers this service with personalised consultation.

Yes, the Longines Master Collection L2.257.4.77.3 is fully compatible with 15mm aftermarket straps. A selection of 15mm customizable straps is available on milanostraps.it, ready for shipment and adaptable in length, initials and stitching thread to fit your wrist perfectly.

A high-quality natural leather strap—alligator, calf, or shell cordovan—typically lasts 3-5 years with daily wear, developing patina and character over time. Durability depends on sun exposure, humidity, and wear frequency. The Casati Milano atelier guarantees 18 months on its artisanal work; with minimal maintenance (protection from stagnant water and excessive heat), life extends significantly.