Rolex · Yacht-Master

Strap for Rolex Yacht-Master 16623

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
Reference16623
FamilyYacht-Master
MovementRolex caliber 3135 hours, minutes, seconds | chronometer

Recommended spring bar

Spring bars Rolex vintage 20mm × 2mm — drilled lugs

Technical match for lug width and diameter · lug 20 mm · Ø 2 mm · drilled lugs

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Straps for the Yacht-Master 16623

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Yacht-Master 16623, seen from the bench

The Yacht-Master reference 16623 features a 40mm case made of stainless steel and yellow gold with 20mm lugs. It is powered by the Rolex 3135 automatic chronometer-certified caliber, with an indication of hours, minutes and seconds. The model combines stainless steel with yellow gold inserts in the construction of the case and bezel.

Frequently asked questions

What is the lug width of the Rolex Yacht-Master 16623?

The lug width of the Rolex Yacht-Master 16623 is exactly 20 mm. This dimension is specific to the two-tone Rolesor generation and remains unchanged across productions from 1992 to 2000. To verify correct compatibility, measure the space between the two lugs with a digital calliper, from shoulder to shoulder of the case.

Which strap is best for the Yacht-Master 16623?

Alligator in cognac or muted brown remains the historically and aesthetically consistent choice. Alternatively, shell cordovan in black or dark brown offers excellent quality and predictable ageing. Vegetable-tanned calf represents a versatile and more accessible option, whilst nato or rubber straps are aesthetically unsuitable for the sophistication of the two-tone Rolesor.

How do I change the strap on a Rolex Yacht-Master 16623?

The lugs of the 16623 are closed (not opened laterally), so the deployant buckle or bar must be extracted with care and lateral movement. Never use inappropriate tools that could scratch the yellow gold inserts. Perform the operation on a soft surface and with sufficient natural light to avoid accidental damage.

Can I use an aftermarket strap on a Rolex Yacht-Master 16623?

Yes, provided it is certified for a 20 mm lug width. Artisanal straps of quality (alligator, shell cordovan, vegetable-tanned calf) are fully compatible and can replace the original strap. Verify that the deployant buckle or bar are correctly sized for the case width.

How long does a leather strap last on a Rolex Yacht-Master 16623?

An artisanal strap in alligator or vegetable-tanned calf with appropriate tannage lasts an average of 4–6 years of daily use, provided proper maintenance (avoid prolonged moisture, apply protective wax annually). Shell cordovan, thanks to its stronger natural fibres, can exceed 8–10 years. All Casati Milano straps include an 18-month guarantee on 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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Casati Milano · Via XX Settembre 15, Milan · by appointment only