Albert II, Prince of Monaco
As Monaco's head of state, Prince Albert II is depicted on coins, including collectors' coins, with very rare exceptions. One of the most recent examples is the €5 silver Prince Albert II commemorative coin, the first commemorative coin with his effigy on it, minted in 2008. On the obverse, the prince is depicted in profile with his name on the top of the coin. On the reverse, the Grimaldi coat of arms appears; around it, the words "Principauté de Monaco" (Principality of Monaco) also appear along with the nominal monetary value of the coin.As the prince, his official shortened title is "His Serene Highness Albert II, Sovereign Prince of Monaco"; this does not include the many other styles claimed by the Grimaldi family.
Rainier III, Prince of Monaco
As Prince of Monaco, Rainier was also responsible for the principality's new constitution in 1962 which significantly reduced the power of the sovereign. (He suspended the previous constitution in 1959, saying that it "has hindered the administrative and political life of the country.") The changes ended autocratic rule, placing power with the prince and a National Council of eighteen elected members.