Rainier III, Prince of Monaco Rainier III, Prince of Monaco Rainier III (Rainier Louis Henri Maxence Bertrand Grimaldi; 31 May 1923 – 6 April 2005) ruled the Principality of Monaco for almost 56 years, making him one of the longest ruling monarchs in European history. Though internationally known for his marriage to American actress Grace Kelly, he was also responsible for reforms to Monaco's constitution and for expanding the principality's economy beyond its traditional casino gambling base. Gambling accounts for only approximately three percent of the nation's annual revenue today; when Rainier ascended the throne in 1949, it accounted for more than 95 percent. Rainier
Vehicle registration plates of Monaco Vehicle registration plates of Monaco Vehicle registration plates of Monaco are unusually small (a few centimeters smaller than an American license plate), and are composed of four numbers and/or letters. The plates are colored blue font on a white background and have the coat of arms of Monaco on the left side with the year number (on the rear plate only) to attest that tax has been paid. All plates starting with "000" belong to the family of Albert II, Prince of Monaco. ""Principauté de Monaco"" is written at the bottom of the plate. Before 1979, the color of the