Oris · Big Crown

Strap for Big Crown Original Pointer Date 40 Bronze / Red / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
Reference01 754 7741 3168-07 8 20 01
FamilyBig Crown
MovementOris caliber Oris 754 hours, minutes, seconds | date
Year2022
CaseBronze, Stainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the Big Crown 01 754 7741 3168-07 8 20 01

Selected for the 20 mm lug width

All 20 mm straps →

The Big Crown 01 754 7741 3168-07 8 20 01, seen from the bench

The Oris Big Crown 01 754 7741 3168-07 8 20 01 is a 40mm bronze and stainless steel watch descended from 1940s Swiss aviation instruments. It features the signature oversized crown of the ProPilot line and the automatic Oris caliber 754 movement with hours, minutes, seconds and date display. The lug width is 20mm. The bronze case develops a unique patina over time, while the dial remains legible in low light thanks to luminescent appliques.

Frequently asked questions

What is the lug width of the Oris Big Crown 01 754 7741 3168-07 8 20 01?

The lug width of the Big Crown ProPilot is 20mm. This standard ensures wrist stability whilst maintaining balanced proportions with the 40mm case. It is crucial to verify the width before purchasing a strap, as even 1mm differences compromise compatibility and attachment fit.

Which strap type pairs best with the bronze Big Crown?

To enhance the aviator character and bronze patina, a vegetable-tanned leather strap in brown or cognac represents the most aesthetically coherent choice. However, a black alligator strap conveys formal elegance, whilst grey technical rubber emphasises the sporty vocation and use in demanding conditions.

How do you change the strap on this Oris?

The change is straightforward and requires no watchmaking expertise: a small lever tool (spring bar tool) is needed to extract the elastic pins that secure the strap to the case lugs. Light upward pressure releases the pin. The operation takes approximately 30 seconds per lug. Milano Straps supplies all straps pre-adjusted to the correct width.

Is an aftermarket 20mm strap reliable for the Big Crown?

Yes, provided it has been crafted by specialised artisans who understand manufacturing tolerances. A quality strap, featuring selected leather and double or triple stitching, often exceeds factory durability and longevity. Milano Straps works exclusively with suppliers guaranteeing premium components and manual quality control.

How long does a leather strap last on this watch?

Durability varies according to usage, material, and stitching. A good-quality vegetable-tanned leather strap withstands approximately 18–36 months of daily wear before showing failure signs (cracking, thinning). Technical rubber lasts 24–48 months. Vegetable tanning ages more nobly: leather softens and develops patina, whilst stitching remains the critical point to inspect periodically.

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