Strap for Heritage 1951 Silver

The Longines Heritage L2.745.4.73.2 features a 20mm lug width. This measurement represents the distance between the two vertical attachment lugs on the case, and is the standard medium-to-large size for classic wristwatches. A 20mm strap fits precisely into the case lugs, ensuring stability and security.

For the Longines Heritage L2.745.4.73.2, an alligator strap with vegetable tanning is ideal: the fine grain of the reptile skin enhances the sophistication of the satin dial, whilst the natural patina that develops over time tells a story of wear. Alternatively, textured calf leather offers practicality with elegant aesthetics, and a cotton NATO strap emphasises the aviator heritage of the case.

The strap is changed by extracting the spring bars using a dedicated tool. Position the watch case-down, push inward on the spring bar to release the old strap, then insert the new 20mm strap by seating it in the lugs. Ensure the spring bars click securely into place. If unfamiliar with the procedure, we recommend professional service from a certified watchmaker.

Yes, the Longines Heritage L2.745.4.73.2 is fully compatible with aftermarket straps provided they feature the correct lug width: 20mm. milanostraps.it offers an extensive range of artisanal 20mm straps in alligator, calf, shell cordovan and technical materials, customisable in sizes and finishes.

A quality leather strap (alligator, calf with vegetable tanning) typically lasts 3–5 years with daily use, depending on humidity exposure, perspiration and temperature variations. Vegetable-tanned leather ages better than synthetic alternatives, developing a rich patina whilst maintaining structural integrity. Proper maintenance—periodic cleaning and dry storage—significantly extends strap longevity.