Strap for Equestrian Horseshoe 34 MOP

The lug width of the Longines Equestrian L6.138.4.87.2 is 16mm. This measurement is stamped on the interior of the lugs and represents the internal distance between the pins that hold the strap. Manual verification with a calliper confirms the value, which is essential to avoid incorrect aftermarket strap purchases.

Dark brown alligator represents the premium choice, enhancing the watch's sporty elegance. Cognac calf leather offers daily versatility with superior durability. Bordeaux shell cordovan adds tactile depth and natural patina over time. Navy NATO cordura remains ideal for equestrian and outdoor contexts. The choice depends on use case: formal, daily wear, or sporting.

Removing the strap requires a spring bar remover tool to compress the horizontal pin and slide it free from the lug grooves. The reverse process installs the new strap, ensuring the pins are fully inserted to prevent watch movement. Mechanical operations can be delegated to experienced artisans to avoid damage to the case.

Original Longines straps offer certification and construction specifications dedicated to the model. Quality aftermarket straps, such as artisanal leather options, guarantee mechanical compatibility (16mm lugs) while often featuring superior materials and finishes. The difference lies in quality control and customisation: a bespoke strap allows for personal initials, custom thread colour, and specific measurements.

Leather strap longevity depends on material and usage. Alligator and shell cordovan maintain structural integrity for 4–6 years with light-to-moderate daily use. Calf leather, being more porous, tends to deteriorate within 2–3 years under the same regime. Vegetable-tanned leather, whilst requiring maintenance, can last over 7 years with proper care. Exposure to moisture, heat, and perspiration accelerates ageing. Artisanal warranties (such as Casati Milano's 18 months) cover manufacturing defects, not natural wear.