H. Moser & Cie · Endeavour

Strap for Endeavour Perpetual Calendar, Platinum, Ardoise Dial

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

Lug width20 mm
Case diameter41 mm
Reference1341-0300
FamilyEndeavour
MovementH. Moser & Cie caliber HMC 341 hours, minutes, day / Night Indication, small seconds | leap year, month, perpetual calendar, big date | power reserve indicator
CasePlatinum

Spring bar

Swiss Standard universal spring bars

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

Straps for the Endeavour 1341-0300

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Endeavour 1341-0300, seen from the bench

The Endeavour by H. Moser & Cie is equipped with the Manufacture caliber HMC 341 with perpetual calendar complications and day/night indication. The movement includes large date, month, leap year and small seconds with power reserve indicator. The reference 1341-0300 presents the hours and minutes functions integrated with the automatic perpetual calendar system.

Frequently asked questions

What is the exact lug width of the H. Moser & Cie Endeavour 1341-0300?

The lug width of the H. Moser & Cie Endeavour 1341-0300 is 20mm. This measurement is critical for selecting a compatible strap. Always ensure that the strap lug width matches exactly 20mm, measured internally between the caseback lugs. An incorrectly sized strap will cause excessive play or prevent proper mounting.

What strap material is best suited for the H. Moser & Cie Endeavour 1341-0300?

The H. Moser & Cie Endeavour 1341-0300 in platinum pairs ideally with alligator or vegetable-tanned calf leather straps. Alligator ensures maximum elegance and controlled ageing; vegetable-tanned calf develops natural patina, synergistic with the platinum case patina. For versatile use, a rubber or NATO strap maintains the design's minimalism without sacrificing practicality.

How do you change the strap on the H. Moser & Cie Endeavour 1341-0300?

Strap replacement requires a spring bar tool to compress the internal spring mechanism. Remove the pins from the old strap, then insert the new strap by aligning the lug holes with the case pins. Compress gently to allow insertion. We recommend having a professional perform this operation to avoid damage to the platinum case.

Are aftermarket straps compatible with the H. Moser & Cie Endeavour 1341-0300?

Yes, any strap with a 20mm lug width is compatible with the 1341-0300, provided the lug passage is constructed to accommodate standard pins. Milano Straps offers artisanal 20mm straps specifically tested for this size. Always verify that the manufacturer explicitly states 20mm compatibility to avoid incompatibility issues.

How long does a leather strap last on the H. Moser & Cie Endeavour 1341-0300?

Durability depends on material and usage. An alligator or vegetable-tanned calf strap lasts 3-5 years with moderate daily use. Natural leather wears and ages, developing desirable patina. Rubber endures 4-7 years under normal conditions. Strap replacement is recommended when the lug area shows wear or the leather fibre begins to deteriorate significantly.

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