Nicolas Rieussec is known for inventing the first chronograph in 1821 and getting the patent for it in 1822. This chronograph was different from the conventional designs we often see today; it consisted of a rotating disc and ink-writing hand to record the time. In 2008, Montblanc gave tribute to Rieussec by launching the first "Nicolas Rieussec Chronograph" that displayed the chronograph in its original fashion; using rotating discs for the elapsed seconds and minutes under fixed hands. In 2012, Montbanc debuted the, "Nicolas Rieussec Chronograph Open Hometime," like the current example. This model has the same chronograph rotating discs but added the dual time complication, displaying the home time in the center of the watch on another rotating disc. This model also has a semi-skeletonized dial, giving the watch a more complicated and interesting aesthetic. This model also features a mono-pusher design, where the button at 8 o'clock, starts, stops, and resets the chronograph.