Back in year 2008, the German manufacturer of luxury writing instruments and watches, Montblanc launched the Nicolas Rieussec chronographs, paying tribute to the ingenious French watchmaker Nicolas Mathieu Rieussec who
Notably, the 43mm Montblanc Nicolas Rieussec Rising Hours boasts of hour numerals that change colors depending on the time of day or night. The numerals on the hours disc are hollow, showing another disc underneath. And, during night time hours, the numerals are pale blue, and turn black during the day. This interesting function assigns each hour to the day or night, and makes it easier to properly set the date display, so that the date correctly changes at midnight rather than mistakenly at midday.
And, this unusual time display is made possible by the manufacture Calibre MB R220 automatic movement, which is visible through the caseback, and boasts an elaborate patented day/night mechanism which is particularly self-explanatory twice a day.
The $11,000 timepiece is available 18 ct red gold version with finely terraced horns, stainless steel, and 28-piece limited edition 950 platinum versions.