Strap for Master Collection 40 Date Pink Gold - Diamond / Silver

The Longines Master Collection L2.793.9.78.3 features a lug width of 21mm. This dimension is characteristic of vintage chronometers and high-end dress watches, where elegant proportions demand a lug size proportionate to the 40mm case. To verify compatibility, measure the space between both lugs: precisely 21mm ensures perfect strap fit without gaps or lateral protrusion.

For a pink gold timepiece, alligator leather is the ideal choice: its regular texture and ability to develop patina over time make it the natural companion. Excellent alternatives include shell cordovan, which creates direct tactile engagement and develops gloss lustre with use, or vegetable-tanned calf leather for those desiring soft, breathable material. For contemporary contexts, French NATO fabric offers versatility whilst maintaining instrument elegance.

The procedure is straightforward: position the watch on a soft support to protect the case. Use a spring bar removal tool or small flat screwdriver to gently compress the pressure springs embedded within the lugs. Once compressed, the old strap slides away. Insert the new strap by aligning the lug holes with the case lugs, ensuring the pressure springs fully engage within their seats. The process requires only minutes and no technical expertise.

Yes, numerous aftermarket artisanal straps are compatible with the 21mm lug width. Specialised suppliers such as milanostraps.it offer customizable straps in leather (alligator, cordovan, calf), fabric (NATO), and rubber, all engineered for this specific lug width. Contemporary aftermarket quality often surpasses OEM Longines straps: they employ noble leathers, hand-finishing, and artisanal processes that guarantee superior longevity and patina development.

A quality leather strap (alligator, cordovan, calf) typically lasts 4-7 years under moderate daily wear, depending on factors such as sun exposure, humidity, and frequency of use. Shell cordovan, owing to its natural density and inherent water resistance, tends to last longer (up to 10 years). Vegetable-tanned leather is more permeable and thus more biologically 'fragile', yet develops extraordinary patina. A quality NATO strap can last 5-8 years while maintaining elasticity. Regular maintenance—drying after moisture exposure, avoiding direct sunlight—significantly extends strap lifespan.