The watch you are referring to is the Dubey & Schaldenbrand Gran’Chrono Astro. This luxury timepiece is recognized for its complex triple calendar chronograph complications and its signature curved tonneau (barrel-shaped) case.

• Brand & Model: Dubey & Schaldenbrand Gran’Chrono Astro.

• Case Material: Crafted in 18k Yellow Gold. The case features a "cintrée curvex" (double-curved) design that requires over 90 operations to produce.

• Dial: A silver guilloché (engine-turned) dial with a complex layout that took 85 stages to create.

• Movement: Swiss Automatic movement, often a modified Valjoux 7751 or a Dubey & Schaldenbrand caliber, featuring hand-engraved gold finishing, a skeletonized rotor, and blued screws.

• Complications:

  • Triple Calendar: Displays the day and month in windows at 12 o’clock, with a central hand pointing to the date along the outer edge.

  • Moonphase: Positioned at 6 o’clock within the 12-hour chronograph counter.

  • Chronograph: Includes a 30-minute counter at 12 o'clock and a 12-hour counter at 6 o'clock.

• Dimensions: Typically measures approximately 38mm x 50mm with a thickness of roughly 15mm.

   

• simple update the net weight of the watch case is 90 grams