Rolex · Day-Date 36

Strap for Day-Date 1803

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

Lug width20 mm
Case diameter36 mm
Reference1803 Arab
FamilyDay-Date 36
MovementRolex caliber 1556 Hours, Minutes, Seconds | Date, Day | Chronometer
CaseYellow Gold

Recommended spring bar

Spring bars Rolex Daytona 16528 yellow gold — 20mm

Technical match for lug width and diameter · lug 20 mm · Ø 1.8 mm · drilled lugs

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Straps for the Day-Date 36 1803 Arab

Selected for the 20 mm lug width · workshop selection

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The Day-Date 36 1803 Arab, seen from the bench

The Day-Date was introduced by Rolex in 1956 as the first wristwatch to display the day and date in full. The model 1803 is equipped with the automatic caliber 1556, certified as a chronometer, and indicates hours, minutes, seconds, date and day of the week. The case features 20mm lugs.

Frequently asked questions

What is the lug width of the Rolex Day-Date 36 reference 1803 Arab?

The lug width of the Rolex Day-Date 36 reference 1803 Arab is 20 mm. This measurement is consistent across all versions of the Day-Date 36 and should be verified using a digital calliper placed between the lower lugs, in direct contact with the case body.

What is the best strap for the Rolex Day-Date 36 1803 Arab in yellow gold?

For a yellow gold piece such as the Rolex Day-Date 36 1803 Arab, a vegetable-tanned alligator strap in cognac, tobacco or aged burgundy tones provides the most coherent aesthetic pairing. Shell cordovan offers a compact, near-mirror surface that enhances the lustre of the gold. A yellow gold or gold-PVD deployant clasp is recommended to maintain metallic consistency across the ensemble.

How do you change the strap on a Rolex Day-Date 36?

The strap on a Rolex Day-Date 36 is removed using a springbar tool that compresses the spring bars housed within the case lugs. Care must be taken to avoid scratching the solid gold case: place a soft cloth beneath the case and use a quality bifurcated-tip tool. If in doubt, it is advisable to entrust the operation to a watchmaker or the Casati Milano atelier.

Are there aftermarket straps compatible with the Rolex Day-Date 36 1803 Arab?

Yes, any strap with a standard 20 mm attachment and springbar system is compatible with the Rolex Day-Date 36 1803 Arab. Milanostraps.it offers a curated selection of handcrafted 20 mm straps in alligator, calf, shell cordovan and rubber, finished to a standard befitting a solid gold timepiece.

How long does a leather strap last on a Rolex Day-Date 36?

The lifespan of a leather strap depends on material quality and maintenance. A high-grade vegetable-tanned alligator strap, kept away from excessive moisture and conditioned periodically, will retain its structural and aesthetic integrity for 3 to 5 years of regular wear. Casati Milano straps carry an 18-month warranty against manufacturing defects.

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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