Strap for Constellation Quadra Quartz 19.3 Yellow Gold / Yellow MOP

The Constellation 1631.77.60 lug width measures 18mm. This dimension is determined by the distance between the two spring bars that support the strap. It is essential to verify this measurement before purchasing an aftermarket strap, as even 1mm variations can cause incompatibility with the case lugs.

For a yellow gold Constellation, recommended materials are high-quality calf leather, alligator or crocodile for formal occasions, and shell cordovan for those desiring a textured material with memory and patina development. Vegetable-tanned crocodile ensures durability and elegant aging parallel to the gold. We advise against synthetic materials that do not reflect the qualitative value of the timepiece.

Strap replacement is accomplished by removing the two spring bars that protrude from the case lugs. Obtaining a spring bar remover tool is essential. Insert the tool into the lug slot to compress the spring bar, then gently extract it. Once the old strap is freed, insert the new strap by aligning the spring bars into the holes and compressing them until they snap into position. Never force manually.

Absolutely. Aftermarket 18mm straps are perfectly compatible with the 1631.77.60 lug width. Milano Straps offers artisanal straps in leather, cotton, and rubber, customizable for length, color, and stitching thread. The important thing is to choose a shoulder (the section that adapts to the lug) of the correct width to avoid mechanical play.

A high-quality leather strap with vegetable tanning and artisanal craftsmanship lasts 4-6 years under normal wear conditions (3-4 days per week). Longevity depends on ambient humidity, direct sun exposure, and cleaning frequency. Leather tends to dry over time; it is recommended to occasionally apply protective oils specific to leather. Milano Straps provides an 18-month warranty on all custom straps.