Strap for Reverso Tribute Duoface Calendar Stainless Steel / Silver

The Jaeger-LeCoultre Reverso Q3918420 features a lug width of 22 mm. This dimension is specific to contemporary and vintage Reverso models with this case thickness. To verify it, measure with a digital calliper the internal distance between the two case attachment pins, centre to centre. A lug width below or above 22 mm would cause play or fastening failure on the buckle.

For the Reverso Q3918420 in satin stainless steel, we recommend primarily alligator (Mississippi or Nile) with natural patina: the grained contrast emphasises the case geometry. Noble alternative: red shell cordovan with ageing, which develops golden striations. For versatility, vegetable-tanned calf leather is reliable but less characterful aesthetically.

The Reverso Q3918420 uses fixed lugs on the case. To replace the strap: (1) insert a small tool (pin remover or calibrated needle) into the small lateral hole of the lug; (2) gently extract the pin from the inside; (3) remove the old strap; (4) insert the new 22 mm strap, aligning it to the seats; (5) reinsert the pin until engagement. This operation takes 2–3 minutes and requires no excessive force.

Yes, provided the lug width is certified at 22 mm (tolerance ±0.3 mm). Not all 22 mm straps are constructed with identical precision: verify that the lugs align perfectly on the case seats and that the first engagement of the buckle occurs without forcing. We recommend bespoke straps or those made by watchmaking specialists.

A quality leather strap (alligator, cordovan or calf) typically lasts 4–7 years if worn daily, up to 10–12 years if rotated with other straps. Alligator tends to yield at articulation points and attachments; shell cordovan is more durable but less flexible. Replacement is recommended when the strap shows structural cracks or loosening of the lugs.