Strap for Constellation Co-Axial 35 Double Eagle Stainless Steel / Yellow Gold / Silver

The lug width of the Constellation 1201.30.00 is 20mm. This dimension represents the distance between the two lateral pins where the strap attaches to the case. Measure correctly by positioning a tape measure perpendicularly between the lugs to ensure compatibility with your new strap.

For the 1201.30.00 we recommend alligator for formal occasions, shell cordovan or vegetable-tanned calf leather for daily wear, and NATO canvas straps for summer sports settings. Your choice depends on the intended use and aesthetic preference, while maintaining coherence with the silvered dial and 904L steel case.

To change the strap on the 1201.30.00, use a spring bar tool. Gently remove the lateral pins that hold the strap to the lugs, lift off the old strap, insert the new strap into the existing pins, and ensure the pins are fully inserted into the lug grooves. If the strap is equipped with a deployant clasp, adjust the width according to your wrist before wearing the watch.

Yes, quality 20mm aftermarket straps are fully compatible with the 1201.30.00. Ensure the width is exactly 20mm, the pins are of the correct size, and the strap is crafted from noble materials such as alligator, shell cordovan, or vegetable-tanned calf leather to maintain the elegance of the original model.

A high-quality artisanal leather strap, such as those offered by Milano Straps, has an estimated lifespan of 5-8 years with daily wear, which can be extended to 10-12 years with periodic maintenance and proper storage. Shell cordovan ages more slowly than calf leather, while vegetable tanning develops a desirable patina over time. NATO and natural rubber straps require less maintenance and last longer with correct use.