Omega
Museum Collection 516.53.37.20.09.011— lug 19mm

The lug width measures 19 millimetres. This constructive specification determines compatibility with any strap: measure the internal distance between the fixed terminals of the case to verify it corresponds exactly to 19mm. Oversized straps will create excessive play; narrower ones will not insert into the attachment holes.

Dark brown or black alligator represents the most conservative choice to enhance the elegance of yellow gold, creating a harmonious dialogue of warm and sober tones. For those who appreciate natural patina, vegetable-tanned calf evolves over time by accumulating visual authenticity. NATO straps are perfect for a contemporary minimalist approach, while vulcanized rubber offers technical grip without compromising modern elegance.

Remove the original strap. Measure with a calliper or millimetre ruler the internal distance between the two fixed metal shoulders of the case, the part that remains when the strap is removed. If the result is 19 millimetres, you are in the correct configuration. This measurement is essential: even 0.5mm difference can cause unusual friction or unwanted movement.

All straps with 19mm lug width are compatible with the Museum Collection. Online you will find alligator, calf, shell cordovan, NATO and vulcanized rubber in the correct specification. Always ensure the product description explicitly states 'lug width 19mm' to avoid incorrect orders. At Casati Milano you can order custom-made with personal choice of leathers and calibrated solid bars.

A quality alligator or calf strap, subjected to moderate daily use, maintains structural integrity between 3 and 7 years. Durability depends on frequency of use, sun exposure, humidity and tanning quality. Vegetable-tanned straps age by developing visible patina within 12-18 months; vulcanized rubber resists 5-8 years with less aesthetic deterioration. Regular maintenance with gentle cleaners and storage in dry environments significantly extends the life of the strap.