Oris · Big Crown

Strap for Oris Big Crown 01 403 7776 4017

Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width19 mm
Case diameter38 mm
Reference01 403 7776 4017
FamilyBig Crown
MovementOris caliber Oris 403 Hours, Minutes, Small Seconds | Date

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

The Big Crown 01 403 7776 4017, seen from the bench

The Oris Big Crown is powered by the automatic Oris 403 caliber with hour, minute, small seconds and date functions. The stainless steel case measures 38mm in diameter with 19mm lugs. The model reiterates the aviator watch design with a generously-sized crown for easy adjustment during flight.

Frequently asked questions

What is the lug width of the Oris Big Crown 01 403 7776 4017?

The lug width of the Big Crown 01 403 7776 4017 is 19mm. This measurement, taken between the inner shoulders of the lugs, is specific to this model and determines which strap to select. Accurate measurement is essential to ensure compatibility and perfect fit to the case.

What is the best strap for the Oris Big Crown 01 403 7776 4017?

The best strap depends on intended use. For historical authenticity, a brown vegetable-tanned Tuscan leather expresses the pilot's watch DNA fully. For practicality and versatility, a grey or military green NATO fabric strap is ideal. For contemporary elegance, an alligator strap or anthracite rubber option provide daily versatility without stylistic compromise.

How do you change the strap on the Big Crown 01 403 7776 4017?

Strap change is accomplished by removing the spring bars from the lugs. Use a dedicated spring bar tool to gently compress the bars and extract them from the case. Once freed, slide off the old strap and insert the new one, reinserting the spring bars into their seats. The operation requires no specialized tools but a degree of care to avoid scratching.

Which aftermarket straps are compatible with the 01 403 7776 4017?

All straps with 19mm lug width are compatible. Milano Straps offers a selection of vegetable-tanned Tuscan leather, NATO, shell cordovan and rubber straps in this size. Always verify that the strap is shaped for 41mm cases to ensure proper fit to the lugs and optimal wrist comfort.

How long does a leather strap last on a watch like the Big Crown?

Durability depends on tanning quality and usage. A vegetable-tanned Tuscan leather strap, if cared for, lasts 5 to 10 years with daily wear. Aging is not a defect but character: the patina that forms tells the watch's story. Occasional cleaning with a damp cloth and avoiding prolonged water immersion maintain the strap in optimal condition for years.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only