Technical Archive

Rolex
Datejust 36 116203-0128— lug 20mm

Rolex Datejust 36 116203-0128: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Datejust 36 Rolesor Yellow Domed / Oyster / Champagne Roman

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Rolex 116203-0128
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

116203-0128

Movement

Rolex caliber 3135 Hours, Minutes, Seconds | Chronometer

The Heritage

The Rolex Datejust 36 116203-0128 is a two-tone yellow gold and stainless steel timepiece debuting in 1945, featuring a 36mm Oyster case with Triplock crown and screw-down caseback. The champagne dial with Roman numerals and cyclops date window offers immediate readability. The automatic Rolex caliber 3135 movement, certified Chronometer with 31 rubies and 28,800 vibrations per hour, ensures over 48 hours power reserve. The 20mm lug width accommodates universal aftermarket straps compatible with standard Rolex pins.

FAQ

What is the lug width of the Rolex Datejust 36 116203-0128?

The Rolex Datejust 36 116203-0128 features a 20-millimetre lug width. This measurement represents the distance between the lugs (or pins) that connect the strap to the case and is essential for selecting compatible straps. To measure the lug width, insert a ruler or digital calliper between the lugs, from the inner edge of one to the inner edge of the other.

Which strap is ideal for the Rolex Datejust 36 116203-0128 two-tone model?

For this yellow gold and stainless steel two-tone model, we recommend alligator in bordeaux or cognac tones for elegant contrast, or vegetable-tanned calf leather in tobacco for a more sophisticated appearance. Shell cordovan offers a unique mirror effect that accentuates the case metals. During summer, a pale blue calf or a NATO strap in steel tones maintains elegance and practicality.

How do you change the strap on a Rolex Datejust 36?

The strap is changed by removing the pins that connect the current strap to the case. Use a pin remover tool or consult a watchmaker to avoid damage. Once the old pins are removed, align the new strap perfectly with the side holes on the case and reposition the pins. If your strap features a deployante clasp, ensure it is compatible with the 20mm lug width.

Can you use an aftermarket compatible strap on a Datejust 36 116203-0128?

Yes, absolutely. The Datejust 36 accepts 20mm aftermarket straps, offering virtually endless options beyond the original Jubilée or Oyster models. Casati Milano's artisanal straps, with calibrated 20mm lugs and passants, guarantee a fit identical to genuine Rolex straps whilst maintaining superior craft quality and finishing.

How long does a leather strap last on a Rolex Datejust 36?

A quality leather strap, worn daily, has an average lifespan of 3–5 years. This estimate varies depending on material: alligator and shell cordovan tend to age beautifully over time, developing authentic patina. Factors such as perspiration, humidity and sun exposure influence longevity. Vegetable tanning offers superior natural resistance compared to industrial tanning. Casati Milano guarantees 18 months against manufacturing defects and offers regeneration services post-warranty.

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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By appointment only · Milan

The atelier's website: casatimilano.com