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Tudor · Royal

Strap for Royal Day-Date 41 Stainless Steel / Yellow Gold / Champagne - Diamond

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

Lug width

20mm
20 mm strapsAll Tudor
Lug width20 mm
Case diameter41 mm
Reference28603-0006 (aka: M28603-0006)
FamilyRoyal
MovementTudor caliber T603 hours, minutes, seconds | date, day
Year2020
CaseYellow Gold, Stainless Steel

Spring bar

Spring bars for Tudor

The right category for this model · choose the 20 mm size

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Straps for the Royal 28603-0006 (aka: M28603-0006)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Royal 28603-0006 (aka: M28603-0006), seen from the bench

The Tudor Royal 28603-0006 is a modern reinterpretation of the legendary Royal collection from the 1970s, featuring a 41 mm stainless steel and yellow gold case with a proprietary Tudor T603 movement. The watch includes a unidirectional rotating bezel, applied indices, and a dark blue sunburst dial with day-date calendar complication at 4 Hz frequency. The case houses a sapphire caseback revealing the decorated movement with striped plates and 22-carat gold rotor, offering 70 meters water resistance. The 20 mm lug width reflects British military standards from the 1960s–1970s era.

Frequently asked questions

What is the exact lug width of the Tudor Royal 28603-0006?

The Tudor Royal 28603-0006 has a lug width of 20 millimetres. This is the internal distance between the two attachment points on the case. All 20mm straps are compatible with this model without any variations.

What is the best strap for the Tudor Royal 28603-0006?

The ideal strap depends on usage: black alligator is the versatile formal choice, shell cordovan develops authentic patina over time, vegetable-tanned calf offers tactile grain and patina development, while NATO straps provide sportiness and easy interchangeability. All straps must respect a maximum thickness of 3.5 millimetres under the lugs.

How do I change the strap on my Tudor Royal 28603-0006?

Position the watch on a soft support (microfiber cloth). Using a spring bar remover, gently press inward on the lug to release tension, then extract the spring bar. Repeat on the other side. Insert the new spring bar into the fresh strap and seat it into the case, pressing until it clicks. Verify the bar is properly seated on both sides.

Is an aftermarket strap compatible with the Tudor Royal 28603-0006?

Yes, any strap with a 20mm lug width is compatible. Ensure thickness does not exceed 3.5 millimetres under the lugs: excess thickness causes binding. Bespoke artisanal straps offer superior aesthetic integration and durability compared to industrial products.

How long does a natural leather strap last on the Tudor Royal 28603-0006?

Durability varies by tannage and usage: alligator lasts 5–7 years with regular maintenance (monthly cleaning, quarterly conditioning). Shell cordovan, being more robust, reaches 8–10 years. Vegetable-tanned calf offers similar durability if properly maintained. Nylon NATO straps exceed 10 years. Avoid prolonged immersion and dry promptly after water contact.

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