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Tudor · Style

Strap for Style 38 Stainless Steel / Yellow Gold / Champagne-Diamond / Bracelet

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 diameter38 mm
Reference12503-0004 (aka: M12503-0004)
FamilyStyle
MovementTudor caliber T601 Hours, Minutes, Seconds | Date
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 Style 12503-0004 (aka: M12503-0004)

Selected for the 20 mm lug width · workshop selection

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The Style 12503-0004 (aka: M12503-0004), seen from the bench

The Tudor Style represents the classic line of the brand with a stainless steel case and bracelet. It is powered by the automatic T601 caliber with hours, minutes, seconds and date functions. The configuration features a traditional design with screw-down crown and case back for water resistance.

Frequently asked questions

What is the exact lug width of the Tudor Style 12503-0004?

The <a href="https://milanostraps.it/pages/termine-glossario/misura-ansa">lug width</a> of the Tudor Style 12503-0004 is 20mm. This measurement, referred to as ansa width in Italian watchmaking terminology, indicates the internal distance between the two lugs. Any strap marked as "20mm" will fit your watch without requiring modifications.

Which strap material works best with the Tudor Style 12503-0004?

We recommend an <a href="https://milanostraps.it/pages/termine-glossario/alligatore">alligator</a> or medium-grained calf leather in neutral tones—dark brown, cognac, black, or slate grey that echoes the dial. The two-tone steel and yellow gold case requires a strap that complements rather than competes. A <a href="https://milanostraps.it/pages/termine-glossario/concia-vegetale">vegetable-tanned</a> leather develops authentic patina over time, creating an aesthetic progression parallel to the natural ageing of gold.

How do you change the strap on a Tudor Style 12503-0004?

Strap replacement uses spring bars—small metal cylinders that secure the strap to the case lugs. Using a spring bar tool or fine flathead screwdriver, gently depress the bar to release one end of the strap, then slide it out. The operation requires care to avoid scratching the case, particularly on polished surfaces. A specialist like Casati Milano provides hassle-free fitting services.

Can I fit an aftermarket strap to my Tudor Style 12503-0004?

Yes, absolutely. Any strap with a 20mm <a href="https://milanostraps.it/pages/termine-glossario/misura-ansa">lug width</a> is compatible. Milano Straps' handcrafted leather straps, constructed with selected hides and precise stitching, mount seamlessly. For a bespoke <a href="https://milanostraps.it/pages/termine-glossario/deployante">deployant clasp</a> or custom dimensions, Casati Milano creates straps to your case's exact specifications, ensuring optimal aesthetics and comfort.

What is the typical lifespan of a natural leather strap?

A quality natural leather strap, with normal wear, maintains structural integrity for 3–5 years. Durability depends on frequency of use, humidity exposure, and regular care. <a href="https://milanostraps.it/pages/termine-glossario/concia-vegetale">Vegetable-tanned</a> leather ages visibly—developing patina and chromatic shifts—yet remains functional beyond this period. Casati Milano backs its straps with an 18-month warranty and provides restoration services (reconditioning, lug replacement) to extend lifespan considerably.

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