The Royal Medal of Recompense was established by a king that was Duke of Schleswig during what years?
Christian IX of Denmark Christian IX (8 April 181829 January 1906) was King of Denmark from 1863 to 1906. From 1863 to 1864, he was concurrently Duke of Schleswig, Holstein and Lauenburg.
Frederick V of Denmark Frederick V (Danish and Norwegian: "Frederik"; 31 March 172314 January 1766) was king of Denmark-Norway and Duke of Schleswig-Holstein from 1746 until his death. He was the son of Christian VI of Denmark and Sophia Magdalene of Brandenburg-Kulmbach.