Jaeger-LeCoultre
Reverso Q39324D3— lug 20mm

The lug width of the Jaeger-LeCoultre Reverso Q39324D3 is 20mm, following ISO 1836 standard. This measurement is taken internally between the pins that attach the strap to the case. To verify, use calliper positioning directly on the upper and lower pins, excluding any overhang from the lug itself.

For the Q39324D3 in rose gold, dark brown alligator remains the natural choice: symmetric scales dialogue elegantly with the reversible case, whilst fine grain maintains sober visuality. Shell cordovan offers extraordinary resistance and pronounced chromatic evolution over time. Grained calf permits bolder tonal variations (burgundy, blue, dark green) whilst maintaining aesthetic equilibrium.

The Reverso Q39324D3 features standard removable spring bar pins. Using a delicate spring bar removal tool, compress the small internal hook on the pin, then withdraw the pin horizontally from the case. Position the new strap, aligning the holes, reinsert the pins and verify they click completely into place. For valuable timepieces, we recommend entrusting this operation to a professional.

Yes, the Q39324D3 accepts quality aftermarket straps at 20mm. Artisanal straps from Casati Milano and Milano Straps online collections offer complete compatibility with this lug width. We recommend selecting thicknesses between 3.5mm and 4.5mm to maintain correct visual proportions relative to the compact case.

A quality leather artisanal strap on a daily-worn timepiece typically lasts 3-5 years before showing significant wear. This interval depends on leather quality (alligator, shell cordovan or vegetable tanning extend its life), climate and maintenance. Casati Milano straps are guaranteed 18 months against manufacturing defects, but actual lifespan far exceeds this period with proper care.