The dinar is the currency of Serbia. The earliest use of the dinar dates back to 1214.

In 1876, state notes were introduced in denominations of 1, 5, 10, 50 and 100 dinars. These were followed by notes of the Chartered National Bank from 1884, with notes for 10 dinars backed by silver and gold notes for 50 and 100 dinars. Gold notes for 20 dinars and silver notes for 100 dinars were introduced in 1905. During World War I, silver notes for 50 and 5 dinars were introduced in 1914 and 1916, respectively. In 1915, stamps were authorized for circulation as currency in denominations of 5, 10, 15, 20, 25, 30 and 50 paras.

Peter II (Serbo-Croatian: Petar; 6 September 1923 – 3 November 1970) was the last King of Yugoslavia, and the last reigning member of the Karađorđević dynasty which came to prominence in the early 19th century.

Peter II was the eldest son of Alexander I and Maria of Romania; his godfather was British king George V of the United Kingdom.

Prince Peter was initially tutored at the Royal Palace, Belgrade, before attending Sandroyd School in Wiltshire, England. When he was 11 years old, Prince Peter succeeded to the Yugoslav throne in 1934 upon the assassination of his father King Alexander I in Marseille during a state visit to France. In view of the new monarch's young age, a regency was set up under his father's cousin Prince Paul.

Although King Peter II and his advisors were utterly opposed to Nazi Germany, Regent-Prince Paul declared that the kingdom of Yugoslavia would join the Tripartite Pact on 25 March 1941. Two days later, King Peter, at age 17, was proclaimed of age, after a British-supported coup d'état.

Postponing Operation Barbarossa, Germany simultaneously attacked Yugoslavia and Greece on 6 April 1941. Within a week, Germany, Bulgaria, Hungary and Italy invaded Yugoslavia, and the government was forced to surrender on 17 April. Parts of Yugoslavia were annexed by Italy, Bulgaria, Hungary and Germany. The remaining parts of the kingdom of Yugoslavia, Croatia and Serbia, two Nazi-puppet governments were installed.

Peter left the country with the Royal Yugoslav Government's ministers following the Axis invasion; initially the Yugoslav king and his government ministers went to Greece en route to British-ruled Jerusalem in Palestine, and then Cairo in Egypt. In June 1941, King Peter arrived in London where he joined numerous other governments in exile from Nazi-occupied Europe.

The King completed his education at Cambridge University before being commissioned in the Royal Air Force. In 1942 he made an ambassadorial visit to America and Canada, where he met American President Franklin D. Roosevelt and Canadian Prime Minister William Lyon Mackenzie King. The whirlwind tour was unsuccessful in securing Allied support for the exiled Yugoslav monarchist cause. FDR and Churchill had already engaged the support of the Communist Yugoslav Government in the Allied effort to defeat Nazi Germany, with a view to ending the hostilities.

Peter married his third cousin, Princess Alexandra of Greece and Denmark in London on 20 March 1944. They had one son, Crown Prince Alexander, who was born on 17 July 1945.

Peter filed for divorce in 1953. He hired attorney René de Chambrun, the son-in-law of Vichy France Prime Minister Pierre Laval. However, the couple reconciled in 1955.

Though the war ended, Peter was not allowed to return home. He was deposed by Yugoslavia's Communist Constituent Assembly on 29 November 1945. After that, he settled in the United States. After many years of suffering from cirrhosis of the liver, he died in Denver, Colorado, on 3 November 1970, after a failed liver transplant.

He was interred in Saint Sava Monastery Church at Libertyville, Illinois, the only European monarch so far to have been buried in America.

On 4 March 2007, former Crown Prince Alexander announced plans to have his father's remains repatriated to Serbia. The plan upset some Serbian-Americans. Peter II had chosen St. Sava Serbian Orthodox Monastery as his interim resting place because of the extenuating circumstances that afflicted his homeland. After talks with the Serbian government, the move was confirmed in January 2013 with the burial place being the Royal Family Mausoleum in Oplenac.

On 22 January 2013, Peter's remains were returned to Belgrade, Serbia. He lay in state in the Royal Chapel in Dedinje before being buried in the Royal Family Mausoleum at Oplenac on 26 May 2013 along with his wife, Queen Alexandra. His mother, Queen Marie, and his brother, Prince Andrej, lie nearby. The Serbian Royal Regalia were placed over Peter's coffin. Present at the return ceremony were the Prime Minister Ivica Dačić, Peter's son Alexander with his family, and Serbian Patriarch Irinej. The latter openly advocated for the restoration of the Serbian monarchy.