Strap for Musem Collection N° 2 “Cosmic" 1951 Red Gold / White

The Omega Museum Collection 5755.20.01 has a lug width of 20mm. This dimension is critical for correct strap fitment: a 19mm strap would cause unwanted lateral play, while a 21mm strap would not fit between the case lugs. Correct measurement is performed by placing the calliper in the gap between the two lugs, not on the case itself.

For the 5755.20.01 in rose gold, we recommend alligator in cognac or black tones for formal elegance, or shell cordovan for a more compact texture and superior durability. Vegetable-tanned calf in tobacco brown or British Racing green offers chromatic versatility and immediate suppleness. FKM rubber remains the practical choice for sports contexts, while synthetic canvas NATO appears disproportionate to the generous case diameter.

Strap replacement requires extraction of the spring bars from the case lugs. Using a spring bar tool, apply lateral pressure on the pin to release it from one of the two housing holes. Once the pin is extracted, the strap slides off. To mount the new 20mm strap, align the lug holes with the pins and push the pin into both housings until the locking click is felt. A simple operation but requires the appropriate tool to avoid case damage.

Yes, milanostraps.it offers a complete collection of 20mm straps compatible with the 5755.20.01, available online in various materials (alligator, shell cordovan, vegetable-tanned calf) and customizable for size, initials and stitching thread. For even more refined solutions, the Casati Milano atelier creates bespoke straps with personal leather selection and an 18-month warranty.

A high-quality natural leather strap (alligator or shell cordovan) mounted on a 5755.20.01 maintains structural and aesthetic integrity for 4-6 years of regular wear. Lifespan varies based on wear frequency, moisture exposure and type of tanning. Vegetable tanning tends to age visually better, developing desirable patina; chrome tanning offers superior colour stability but less aesthetic character over time. Periodic maintenance (light hydrophobic treatments) significantly extends longevity.