Rolex
Datejust 36 126203-0023— lug 20mm

The lug width of the Rolex Datejust 36 126203-0023 is 20 millimetres. This measurement represents the distance between the lugs and determines strap compatibility. Measure precisely using a digital calliper between the spring bar pins, not on the outer edge of the lugs. A quality handmade strap maintains a tolerance of ±0.1 millimetres to ensure precise fit without lateral movement.

For the Datejust 36 with Mother of Pearl dial, dark alligator (black or deep brown) emphasises the watch's formal and aristocratic character. Vegetable-tanned calf in cognac or burgundy creates chromatic harmony with the yellow gold. Grey-tortoise shell cordovan represents the balance between elegance and daily versatility. Choice depends on context: formal occasions suggest alligator; daily wear favours calf or cordovan.

Strap replacement requires removing the spring bars from the lugs. With the watch face-down, insert the strap removal tool into the spring bar groove, compress the internal spring and extract the pin. Repeat at the opposite lug. To fit the new strap, reverse the process: insert the spring bars ensuring the internal spring seats fully. We recommend professional assistance to prevent damage to the case or lugs.

Yes, any strap with 20mm lug width is compatible with the Datejust 36 126203-0023. Compatibility depends solely on lug width, not watch brand. A handmade strap in premium alligator or calf, manufactured with 20mm lugs and precise pins, is indistinguishable on the wrist from an original Rolex strap and often develops superior patina over time. The quality of tanning, leather texture and buckle finish determine true value, not the strap brand.

A quality handmade leather strap (alligator, calf, shell cordovan) typically lasts 3–5 years in daily use, varying by climate and humidity. Shell cordovan, due to its natural fibrous structure, can last 7–10 years or longer. Vegetable-tanned leather develops pronounced patina and requires periodic maintenance with natural leather oil. FKM rubber lasts 4–6 years before losing elasticity. Periodic replacement is advisable to keep the watch in excellent condition. Casati Milano offers an 18-month warranty on manufacturing defects of the strap.