Strap for Master Collection Retrograde

The lug width (ansa measurement) of the Longines Master Collection L2.714.4.78.6 is 20 mm, representing the distance between the two lugs. This specification is consistent across all examples of this model, allowing compatibility with any artisanal strap dimensioned for 20 mm lug width. To verify, position a ruler between the lugs and read the measurement in millimetres.

For the Master Collection L2.714.4.78.6, alligator straps are recommended for formal contexts, vegetable-tanned calf leather for daily wear with natural patina development, or shell cordovan for those seeking longevity and chromatic intensity. Selection depends on use case: alligator for office settings, calf for versatility, cordovan for long-term investment.

To change the strap on the Master Collection L2.714.4.78.6, use a dedicated tool (spring bar or screw mechanism, depending on case construction). Support the watch horizontally, access the lateral pins, and deploy the tool to extract the pin and release the old strap. Insert the new strap by aligning its holes with the pins and activate the tool to secure. If inexperienced, consult a professional watchmaker.

Yes, any strap with a 20 mm lug width is compatible with the Longines Master Collection L2.714.4.78.6, regardless of watch brand or price segment. However, to maintain visual harmony between the 41 mm case and strap, it is advisable to select thickness and style consistent with the watch's proportions.

A quality leather strap (alligator, calf, cordovan) on a Longines Master Collection L2.714.4.78.6 typically lasts 3–5 years with daily wear, depending on ambient humidity, sun exposure, and maintenance. Vegetable-tanned or cordovan leather, if properly cared for and kept dry, can exceed 7 years of service. Artisanal guarantee is typically 18 months.