|Greece coin - 5 Drachmai, Year 1966|
Reverse : 1966 * KWNCTANTINOC BACIAGYC TWN EAAHNWN * - Profile of a young King Constantine II, facing left.
Constantine I, King of the Hellenes (2 August 1868 - 11 January 1923) was King of Greece from 1913 to 1917 and from 1920 to 1922. He was Commander – in - Chief of the Hellenic Army during the unsuccessful Greco-Turkish War of 1897 and led the Greek forces during the successful Balkan Wars of 1912-1913, in which Greece captured Thessaloniki, and doubled in area and population. He succeeded to the throne of Greece on 18 March 1913, following his father's assassination