Though it was one of DeWitt’s early designs, the case of Dame de Pressy is a shape that the company did not produce in large numbers.
The Silicium Hora Mundi displays 24 capitals symbolizing the 24 time zones in the world. The second time zones are adjusted by means of the push piece at 2 o’clock.
Thanks to the patented differential system coupled with the tourbillon complication, this innovative movement makes it much easier and quicker to wind the watch.
The Force Constante is an innovation in tourbillions. The barrel spring transmits constant power to the tourbillon, regardless of the barrel’s state of wind.