Strap for Master Collection Date 36 Two Tone Linen

The lug width of the Longines Master Collection L2.518.5.38.7 is exactly 19 mm. This dimension is determined by the proportions of the 36 mm case and is critical for aftermarket strap selection. Always verify the measurement with a ruler before ordering, as incorrect tolerances can result in slack fit or installation difficulties.

For this model, we recommend vegetable-tanned alligator to enhance the perception of luxury, or dark brown calf leather that accentuates the clean lines of the dial. Shell cordovan is the connoisseur's choice, with its oiled, lustrous appearance providing elegant contrast against the yellow gold case. The choice should reflect intended usage: formal, daily wear, or alternating.

Strap replacement requires: 1) Position the watch with lugs facing upward; 2) Locate the spring bar inside the lug; 3) Use a spring bar remover tool to compress the spring and release the bar; 4) Remove the old strap; 5) Insert the new spring bar into the new strap and realign the bar within the lug. This operation is delicate; we recommend consulting a professional to avoid casebacks scratches.

Yes, any strap with a 19 mm lug width is compatible. It is essential to verify tolerance (±0.2 mm is acceptable) and construction quality: an inferior strap can cause slack or stress on the lugs. Select artisanal manufacturers that maintain high dimensional precision and finishing standards.

A high-quality leather strap (alligator, cordovan, or vegetable-tanned calf) typically lasts 3-5 years in daily use, depending on climate, humidity, frequency of wear, and maintenance. Vegetable tanning develops patina over time, improving aesthetically. Chrome tanning, though more economical, tends to degrade more rapidly. Proper maintenance—drying after moisture exposure and occasionally conditioning with specialist products—significantly extends longevity.