Omega
Museum Collection 516.53.37.20.09.020— lug 19mm

The lug width of this model is precisely 19 mm. Omega chose this width to maintain the balanced proportions of the 37 mm case, exactly as in the 1967 De Ville. You can verify it by measuring internally between the two metal lugs with a caliper; a tolerance of ±0.5 mm is within standard manufacturing specifications.

Alligator in cognac or dark brown tones naturally complements yellow gold thanks to the leather grain that reflects light consistently with the metal. Alternatively, vegetable-tanned calf allows for an extraordinary aged patina. For those preferring informality, a raw canvas NATO strap or a rubber strap with deployant clasp ensures practicality while preserving elegance.

The Museum Collection 516.53.37.20.09.020 uses a traditional removable lug system with spring bars. Obtain a spring bar removal tool (nothing expensive), rest the watch on a soft surface, locate the small slots hidden at the ends of each lug, then gently extract the springs. The new 19 mm strap installs in the same manner. If you are not experienced, entrust it to a specialized service center.

Yes, provided the lug width is exactly 19 mm (tolerance ±0.5 mm). Aftermarket 19 mm straps, whether leather or rubber, install on Omega's original lugs without any modification. Avoid inferior quality straps: the contrast with the yellow gold case would be evident.

A quality leather strap (alligator, vegetable-tanned calf, shell cordovan) typically lasts 3–5 years with regular wear, longer if worn occasionally. Longevity depends on water exposure, frequency of use, and maintenance. A rubber or NATO strap has a longer lifespan, 5–10 years, but still requires periodic inspections to verify the integrity of stitching and lugs.