Strap for Henry Platinum, Ardoise Dial

The lug width of the H. Moser & Cie Henry 324.607-006 is 18mm. This measurement indicates the distance between the two spring bar attachments on the case where the strap sits. It is essential to ensure that an aftermarket strap is precisely 18mm wide to achieve a perfect fit without looseness or excessive tension.

For the platinum case and minimalist design of the 324.607-006, we recommend an alligator strap with fine grain or vegetable-tanned calf leather in cognac colour. Both options respect the sobriety of the case without competing aesthetically. For more versatile alternatives, a grey steel NATO or an FKM rubber strap maintains the pure aesthetic of the timepiece whilst preserving its integrity during daily wear.

Changing the strap on the 324.607-006 requires a spring bar tool or a specialised small scissor-type tool. Position the watch face-up, insert the tool into the gap between the lug and the existing strap to release the spring bar pin, remove the old strap and align the new one with the holes. Proceed carefully to avoid scratching the platinum: in case of uncertainty, consult a specialist atelier such as Casati Milano.

Yes, aftermarket straps with an 18mm lug width are fully compatible with the 324.607-006. Milano Straps offers a carefully curated selection of leather, NATO and rubber straps specifically designed for this width. The key is to verify that the strap has been cut and finished precisely for 18mm rather than being approximately similar.

A quality leather strap, such as alligator or vegetable-tanned calf, typically lasts 3–5 years with moderate daily use. Longevity depends on exposure to moisture, sunlight and frequency of wear. Aged patina is not a defect but a sign of authenticity and natural wear. To extend lifespan, rotate straps and store unused ones in a dry environment.