Strap for Big Crown Diamonds 38 Stainless Steel / MOP

The lug width of this model is precisely 19 millimetres. This measurement represents the internal distance between the upper and lower lug ends of the case and is critical for correct aftermarket strap selection. Accurate measurement: place the calliper perpendicular between the lugs, excluding any decorative case projections.

For the avionic and military vocation of the Big Crown, we recommend three priority options: alligator with vegetable tanning (for formal contexts with natural patina), medium-brown chrome-tanned calf (conservative versatility), black vulcanised rubber (moisture-resistant performance). Selection depends on primary usage and dial palette. Alligator emphasises sobriety; calf ensures classical elegance; rubber provides sporting functionality.

Strap replacement involves: 1) Extraction of spring bars using a dedicated tool or fine-tipped pliers; 2) Positioning the new strap with lugs perfectly aligned to the case anchor points; 3) Insertion of the spring bar ensuring symmetrical mechanical load. We recommend using a deployante clasp if the model is not equipped: it improves wearing comfort and length adjustment.

Yes, provided the lug width is accurate (19 millimetres) and metal finishes match the case finishing (satin steel with polished inlay). Artisanal high-quality straps ensure superior aesthetic coherence over OEM straps; however, it is essential to verify fastening system compatibility (standard spring bars versus proprietary systems). Consult technical specifications before ordering.

Leather strap durability depends on tanning method and environmental exposure. Alligator with vegetable tanning maintains structural integrity for 5–7 years of daily use, developing desirable natural patina; chrome-tanned calf ensures 3–5 years of resistance before requiring maintenance. Humidity, extreme temperatures and solar exposure accelerate ageing. Periodic maintenance (cleaning, conservative conditioning) significantly extends longevity.