H. Moser & Cie · Endeavour

Strap for Endeavour Small Seconds, White Gold, Argenté 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 diameter39 mm
Reference1321-0210
FamilyEndeavour
MovementH. Moser & Cie caliber HMC 321 Hours, Minutes, Small Seconds | Power Reserve Indicator
CaseWhite Gold

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 1321-0210

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Endeavour 1321-0210, seen from the bench

The H. Moser & Cie Endeavour features the in-house caliber HMC 321 with hour, minute, small seconds, and power reserve indication. The 1321-0210 reference represents the Swiss brand's minimalist approach to watchmaking complications.

Frequently asked questions

What is the exact lug width of the H. Moser & Cie Endeavour 1321-0210?

The Endeavour 1321-0210 features a lug width of precisely 20 millimetres. This measurement refers to the distance between the centres of the lateral lugs on the white gold case. Accurate measurement ensures full compatibility with aftermarket straps and prevents premature wear on the attachment pins.

Which strap pairs best with the Endeavour 1321-0210?

Premium leather represents the natural choice. Alligator with a silken patina or vintage shell cordovan integrate perfectly with white gold, creating refined contrast. For more versatile daily wear, vegetable-tanned calf offers flexibility without aesthetic compromise. Navy NATO fabric creates chromatic coherence with the smoked dial.

How do I change the strap on my H. Moser & Cie Endeavour?

Strap replacement requires a specific tool: the spring bar tool, a small metal lever that allows compression of the lateral pins. Position the tool in the lateral slots of the case and apply gentle pressure to release the old strap, then insert the new strap ensuring perfect alignment with the lugs. For watches of Endeavour's value, professional replacement by a qualified watchmaker is recommended.

Can I use an aftermarket compatible strap with the 1321-0210?

Yes, absolutely. Any strap with a 20mm lug width is technically compatible. Milano Straps offers a dedicated collection of 20mm straps in alligator, calf, shell cordovan, NATO, and rubber, all crafted to artisanal standards that respect the Endeavour's proportions and aesthetic.

How long does a leather strap last on a daily-wear watch?

Durability depends on tanning quality and intensity of use. A premium alligator or shell cordovan strap resists 3 to 5 years with moderate daily wear. Vegetable-tanned calf typically lasts 2 to 3 years. Factors such as humidity, sun exposure, and maintenance significantly influence longevity. Periodic replacement preserves watch aesthetics and enhances overall appearance.

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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only