X. Keresztély, full name Glücksburg Christian Carl Frederik Albert Alexander Vilhelm, was born on September 26, 1870 in Copenhagen and died in the same place on April 20, 1947. He reigned as King of Denmark from May 14, 1912 until his death, and was the first and only King of Iceland from December 1, 1918 to June 17, 1944. He spent his youth in Charlottenlund Palace in Copenhagen, VIII. He was born as the eldest child of King Frederiks of Denmark and Lujza Bernadotte. He was baptized in Christiansborg Palace on October 31, 1870. Prince Christian had seven more siblings. He passed the Danish university entrance examination in 1889 and received the usual military education in the royal family, then served in the 5th Dragoon Regiment. He then studied at the officers' academy in Randers from 1891 to 1892. 1898. married on April 26 III. Ferenc Ferenc with the daughter of the Grand Duke of Mecklenburg-Schwerin, Alexandrina. They had two sons: Prince Frederick (1899) and Prince Knut (1900). Before his accession to the throne, he stayed in Nice, and here he learned about his father, VIII. About the news of Frederick's death. After his return home, he ascended the throne under the name Keresztely X. Several significant events took place during his reign, such as the conflict over Schleswig, which was one of the defining events in the development of the Danish monarchy in the 20th century. According to the terms of the Versailles Peace Treaty, the further fate of Schleswig was decided by referendum: one in the northern part of Schleswig, the other was held in the center of Schleswig.X. Christian was considered a typical Renaissance ruler. He supported the arts, had many foreign musicians in his court, and danced well. Through his constructions, his cities developed and beautified. He had a good sense of language, in addition to his mother tongue, he also spoke German, Latin, French and Italian.

Christian X was the Danish king between 1912 and 1947. Among its merits in terms of coinage is the new Danish crown introduced in the 1920s, which was decorated with the portrait of the king. The new monetary system was based on the gold standard and stabilized the Danish economy in the post-World War II period.