Hamilton · Valiant

Strap for Valiant Auto 40 Stainless Steel / Silver / 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 straps All Hamilton

Lug width20 mm

Case diameter40 mm

ReferenceH39515153

FamilyValiant

MovementETA caliber 2824-2 hours, minutes, seconds | date

CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

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Straps for the Valiant H39515153

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Valiant H39515153, seen from the bench

The Hamilton Valiant H39515153 embodies American instrumental watchmaking tradition. It houses the automatic ETA 2824-2 caliber with 42 hours power reserve and 28,800 oscillations per hour. The case measures 40.00mm in diameter, crafted in 316L stainless steel with 100-meter water resistance and mineral crystal. The lug-to-lug distance is 20.00mm, ensuring balanced proportions on various wrist sizes.

Frequently asked questions

What is the lug width of the Hamilton Valiant H39515153?

The Hamilton Valiant H39515153 features a lug width of 20.00mm. This measurement is a widespread standard, ensuring compatibility with an extensive range of artisanal straps.

What is the best strap for the Hamilton Valiant H39515153?

There is no single "best" choice, but optimal selections depend on context. For formal settings, dark brown alligator; for refined daily wear, vegetable-tanned calf; for practical versatility, cotton NATO or tonal rubber.

How do I change the strap on my Hamilton Valiant H39515153?

Remove the existing strap by unscrewing the spring bar terminals at the case extremities, or pressing the quick-release button if fitted. Insert the new strap by aligning the holes with the 20mm lugs, then secure with precision.

Can I use an aftermarket strap for the Hamilton Valiant H39515153?

Yes, provided the lug width is exactly 20.00mm. Artisanal straps of superior quality often deliver better aesthetic and tactile performance than OEM alternatives, whilst maintaining full mechanical compatibility.

How long does a leather strap last on the Hamilton Valiant H39515153?

A high-quality leather strap with vegetable tanning or aniline finish maintains functionality between 18 and 36 months depending on usage frequency, sun exposure, and perspiration. The patina developed increases its aesthetic value over time.

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