Longines · Heritage

Strap for BelleArti 16 Stainless Steel

Takes 10 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width10 mm
ReferenceL2.195.4.73.6 (aka: L21954736)
FamilyHeritage
MovementLongines caliber L963 hours, minutes | date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

The Heritage L2.195.4.73.6 (aka: L21954736), seen from the bench

The Longines Heritage L2.195.4.73.6 is a refined cocktail watch featuring a 15.90mm stainless steel case that reinterprets 1920s feminine elegance. It houses the robust Longines L963 automatic movement with hours, minutes, and date indication, paired with an anti-reflective sapphire crystal and 30m water resistance. The distinctive 10mm lug width requires precise measurement for strap selection.

Frequently asked questions

What is the exact lug width of the Longines Heritage L2.195.4.73.6?

The lug width of the Longines Heritage L2.195.4.73.6 is 10mm, a non-standard dimension requiring precise measurement of the space between the spring bar holes. Use a digital calliper or contact Casati Milano atelier to verify the exact tolerances of the case in person.

Which strap materials are most suitable for this timepiece?

Alligator is the most sophisticated choice, offering natural texture and exceptional patina development. Vegetable-tanned leather provides softness and character. Shell cordovan, with its inherent rigidity and natural lustre, transforms the watch into a genderless aesthetic. Calibrated rubber is ideal for summer wear, whilst canvas with suede backing ensures daily versatility.

How do I correctly measure the lug width of this Longines?

Measure the lug width between the inner centre of the two spring bar holes using a digital calliper positioned perpendicularly, or take a high-resolution profile photograph of the case. Milano Straps provides a detailed photographic guide for self-measurement; alternatively, Casati Milano atelier verifies dimensions during a private appointment.

What is the difference between a standard and bespoke custom strap?

A custom strap from Casati Milano considers the precise case proportions, individual wrist curvature, and conscious selection of leather, grain, and thread colour. A generic strap offers comfort but lacks the aesthetic excellence demanded by a Heritage timepiece of this calibre. The 18-month warranty covers all aspects of artisanal construction.

How long does a leather strap last on a daily-wear watch?

A high-quality leather strap (alligator, calf, shell cordovan) lasts 4-7 years with daily wear, depending on humidity and perspiration exposure. Shell cordovan is the most durable. Vegetable-tanned leather develops natural patina, enhancing its appearance. Rubber has similar longevity but resists moisture. Casati Milano atelier offers regeneration and repair services throughout the strap's lifetime.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only