Oris · Big Crown
Strap for Big Crown Diamonds 38 Stainless Steel / MOP / Bracelet
Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The Big Crown 01 733 7649 4066-07 8 19 76, seen from the bench
Frequently asked questions
What is the lug width of the Oris Big Crown 01 733 7649 4066-07 8 19 76?
The lug width is 19 millimetres. This measurement refers to the internal distance between the two lugs on the case. Compatible straps must fit snugly without slack, with a tolerance of ±0.5 millimetres, ensuring secure yet gentle retention upon fitting.
Which strap is recommended for this Oris Big Crown model?
Selection depends on intended wear. For formal elegance, vegetable-tanned alligator in cognac deepens the case's vintage austerity; for sport practicality, a grey or navy NATO in polyamide provides daily versatility; for humid environments, FKM rubber in pearl grey preserves aesthetic purity without functional compromise.
How do you change the strap on a watch with 19mm lugs?
Remove the strap by inserting a flat tool (spring bar tool) between the lug and strap, gently lifting the internal spring until the pin disengages. Position the new strap by aligning its first slot with the compressed spring, then release the tool. Millimetre-level tolerance demands manual precision; MilanoStraps straps are pre-calibrated for this lug width.
Are aftermarket straps compatible with the Oris Big Crown 01 733 7649 4066-07 8 19 76?
Yes, provided nominal lug width is 19mm and construction quality is artisanal. MilanoStraps straps are calibrated for this measurement through manual inspection, guaranteeing repeatable fitting and precision conforming to horologer standards.
What is the estimated lifespan of a leather strap for this watch?
A calf leather strap with vegetable tanning, subject to moderate daily wear, lasts 18–36 months before strap loops show fatigue signs. Longevity depends on ambient humidity, wearing frequency, and sun exposure. Alligator or shell cordovan straps extend lifespan to 3–5 years due to superior fibre density.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
