Strap for Heritage 1973 Black

The lug width of the Longines Heritage L2.791.4.52.0 is 20mm. This measurement represents the distance between the two attachment points on the case lugs where the strap connects. It is essential to verify this dimension before purchasing a replacement strap to ensure perfect compatibility and secure fastening.

For the Longines Heritage L2.791.4.52.0, straps in French alligator cognac, brown box calf, or shell cordovan are ideal. These materials, worked with vegetable tanning, develop a natural patina that enhances the minimalist aesthetic of the stainless steel case. For casual environments, vegetable-tanned Cordura canvas or American silk offers breathability whilst maintaining elegance.

Strap change is accomplished via spring bars that connect the strap to the case lugs. Simply remove the metal bars carefully with a dedicated tool, slip off the old strap, insert the new one, and reposition the bars. If unfamiliar with the process, Casati Milano offers strap changing service by appointment in Milan.

Yes, any strap with a 20mm lug width is compatible with the Longines Heritage L2.791.4.52.0. It is essential that strap thickness is appropriate (ideally 1.3–1.5mm) to prevent excessive play at the attachment points. MilanoStraps offers 20mm straps in premium leather, customisable in sizes, colours, and finishes.

Leather strap longevity depends on usage, tanning method, and leather quality. Materials such as alligator and shell cordovan in vegetable tanning maintain structural integrity for 5–7 years with daily wear. Box calf and canvas last 3–5 years. Casati Milano guarantees 18 months on bespoke straps, with restoration or replacement available at the atelier.