Strap for Master Collection Calendar 36 Stainless Steel / Diamond / MOP

The lug width of the Longines Master Collection L2.503.0.97.3 is 20 millimetres. This width is the international standard for classic timepieces of medium dimensions and enables you to pair the watch with high-grade artisanal straps from any specialised manufacturer.

For the Master Collection L2.503.0.97.3, alligator straps with fine grain are recommended for formal elegance, or vegetable-tanned calf leather for a more natural aesthetic with controlled ageing. Shell cordovan straps ensure superior durability, whilst natural rubber solutions impart a sporting character whilst maintaining classic restraint. Your choice depends on intended use and dial variant.

To change the strap, remove the case from the current lug assembly: use a flat-bladed tool and gently flex the keeper lug of the new strap downwards, guiding it slowly into the case lugs. Ensure the strap is perfectly aligned and creates no friction on the lugs. The correct 20-millimetre width guarantees smooth insertion without forcing.

Yes. The Longines Master Collection L2.503.0.97.3 uses the standard 20-millimetre lug width, widely available in the artisanal strap market. On milanostraps.it you will find a curated selection of compatible straps, customisable in leather, colour and buckle type (deployante, standard, leather with steel).

Lifespan depends on leather quality and daily wear. A vegetable-tanned calf strap, worn moderately, guarantees 3–5 years of optimal aesthetic performance before slight loss of elasticity. Alligator and shell cordovan, being denser, easily surpass 5–7 years. It is advisable to rotate between multiple straps to distribute wear. Casati Milano offers an 18-month warranty on all handcrafted straps.