IX. King Frederick of Denmark, full name Christian Frederik Franz Michael Carl Valdemar Georg, was the ruler of Denmark from April 20, 1947 to January 14, 1972. 1899. He was born on March 11 in Sorgenfri Palace, Kongens Lyngby, Denmark, and died on January 14, 1972 in Copenhagen. He was born as the first-born child of King Frederick X of Denmark and Queen Alexandrina of Denmark. As a member of the House of Glücksburg, he succeeded his father to the throne. He married Ingrid from Sweden and they had three daughters: II. Margit, Benedikta and Anna-Mária. During his rule, Denmark went through significant social and economic changes, and by amending the inheritance laws, he made it possible for his daughter, II. Follow Margaret on the throne. The king rests in Roskilde Cathedral. During the reign of King Frederick, the modernization and social changes of Denmark continued. Society was transformed and the economy developed. Advances were made in education and health care, and public services improved. Denmark's economy achieved stable growth in the 1950s and 1960s. Industrial production and the service sector also developed. However, the oil crisis negatively affected the country's economy in the 1970s. King Frederick played an important role in Denmark's international relations. During the Cold War, Denmark's neutral status made it possible to maintain diplomatic relations with both Eastern and Western Europe.

IX. King Frederick of Denmark reigned from 1947 to 1972. During his reign, Denmark went through significant changes, from a society living on agriculture to a modern, welfare state. This change also left its mark on the royal coinage. Compared to the previous ones, the coins of King Frederick have a simpler, cleaner design. In addition to the coat of arms and the portrait of the king, there are often national symbols, such as the Danish flag or the crown. Among the royal coins, the 10, 20 and 50 kroner coins are the most frequently traded. These coins were made of traditional silver and gold, but cheaper, non-precious metal versions also appeared after the Second World War. The coins of King Frederick represent one of the most significant periods in the history of Danish coinage. These coins not only preserve the memory of the king's reign, but also reflect the changes in Danish society.