Strap for HMS Lady

The lug width of the Arnold & Son Royal Collection 1PMMP.W01A.C114A is 20 millimetres. This dimension is measured internally, meaning the available space between the two lugs of the case. To measure correctly, position a tape measure inside the case, parallel to the dial, and read the internal distance. Precise measurement is essential to ensure the strap fits perfectly without lateral play or misalignment.

For this reference, alligator leather represents the most natural choice: its fine and regular grain harmonises with the understated aesthetic of rose gold. Alligator in dark brown or cognac tones amplifies the warmth of the case. Alternatively, vegetable-tanned calf leather ages beautifully and develops patina over time. For a more versatile approach, NATO straps in cotton or canvas maintain elegance and practicality. For technical use, FKM rubber straps offer humidity resistance without visual compromise.

To change the strap, use a dedicated spring bar tool or entrust the task to a professional. Position the watch on a soft, secure surface. Insert the tool's tip into the small hole present on the top of the lug, applying gentle downward pressure to compress the internal spring. Simultaneously, withdraw the strap from the case. Repeat on the other side. To insert the new strap, align the holes with the lugs and gently compress the spring using the tool again until the strap seats firmly.

Yes, a quality aftermarket strap with a specific 20mm lug width is fully compatible with the Arnold & Son Royal Collection 1PMMP.W01A.C114A. Ensure the strap is manufactured with consistent thickness (typically between 3 and 4 millimetres of leather) and that the lugs fit snugly without lateral play. We offer a range of 20mm straps in various closures, materials and tones: all compatible with this reference and manufactured to professional standards.

The lifespan of a leather strap depends on usage, environmental conditions and tanning quality. A well-made alligator with vegetable tanning maintains structural integrity for 8–10 years of daily wear. Vegetable-tanned calf typically lasts 5–7 years before eventual replacement. Frequent exposure to moisture, perspiration and UV rays reduces longevity. Proper maintenance—drying after water contact, periodic conditioning with natural oils—significantly extends strap life.