Rolex · Datejust

Strap for Rolex Datejust 6605

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
Reference6605
FamilyDatejust
MovementRolex caliber 1065
Year1956–1959
Case18k Yellow Gold
CrystalAcrylic
BezelFluted 18k Yellow Gold
Water resistance50m

Recommended spring bar

Spring bars Datejust 36 steel — 20mm drilled lugs

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

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Straps for the Datejust 6605

Selected for the 20 mm lug width · workshop selection

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The Datejust 6605, seen from the bench

The Rolex Datejust 6605, presented from 1956 to 1959, is a significant 18-carat yellow gold wristwatch from Rolex's mid-1950s production. The round 36 mm case houses the Caliber 1065 automatic movement with Swiss lever escapement and quick-date mechanism. The watch features a 20 mm lug width and represents the formal aesthetic that established the Datejust as a classic dress watch of its era.

Frequently asked questions

What is the lug width of the Rolex Datejust 6605?

The lug width of the Rolex Datejust 6605 is 20 mm. This is a fixed dimension determined by the structure of the 18-carat yellow gold case. To verify it, measure the internal distance between the two lugs at the strap attachment point using a precision calliper.

What is the best strap for the Rolex Datejust 6605?

For the Datejust 6605 in 18-carat yellow gold, an alligator strap in vegetable-tanned leather with a regular belly grain is the most aesthetically coherent choice. Warm tones such as cognac, tobacco or honey complement the precious metal. Shell cordovan offers a characterful alternative, developing a patina that improves with wear. In both cases, a deployant clasp provides the most secure and balanced closure.

How do you change the strap on a Rolex Datejust 6605?

To replace the strap on a Datejust 6605, use a flat-tip or fork-tip spring bar tool inserted into the hole on each lug. Compressing the spring bar releases the existing strap. It is advisable to work on a watchmaker's cushion to protect the gold case surfaces. The operation requires no specialist skills but should be carried out carefully to avoid scratching the polished surfaces.

Are there aftermarket straps compatible with the Rolex Datejust 6605?

Yes, the aftermarket offers a wide range of 20 mm straps compatible with the Rolex Datejust 6605. It is essential to choose artisan makers who respect the correct lug length and case curvature radius, as these factors affect the aesthetic fit. Milanostraps.it offers handcrafted leather straps made specifically for the 20 mm lug width.

How long does a leather strap last on a Rolex Datejust 6605?

The lifespan of a leather strap depends on the quality of the raw material and frequency of use. A high-grade vegetable-tanned alligator strap, kept away from prolonged moisture and treated periodically with appropriate conditioners, can last between 3 and 7 years with regular wear. Shell cordovan tends to last longer due to the density of its fibres. A deployant clasp reduces mechanical stress on the strap and extends its useful life.

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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