Christian is one of the main reasons there is such a family relationship between European Royal Families. After failing to court his third cousin, Queen Victoria (of Britain), Christian married his second cousin, Princess Louise of Hesse-Kassel. They had six children and married into Royal families across Europe.
The Royalty directly related includes our own Queen Elizabeth II and there is also a link to Prince Philip, the Duke of Edinburgh; Queen Margrethe II of Denmark, King Philippe of Belgium, King Harald V of Norway, King Felipe VI of Spain, Grand Duke Henri of Luxembourg, Michael I of Romania, Constantine II of Greece, plus the queens consort Anne of Romania, Anne-Marie of Greece, and Queen Sofia of Spain. Christian’s grandsons included George V of the United Kingdom, Nicholas II of Russia, Constantine I of Greece, Christian X of Denmark and Haakon VII of Norway.
It’s no surprise that Christian IX was given the nickname of The Father-in-Law of Europe.
The 20 Kroner gold coin is 0.9 (90%) gold and has 8.06g of gold, actual coin weight is 8.96g. The diameter os 23mm. (The 10 Kroner has a fine weight of 4.03g). The other 10% is copper. Having such a high content of copper the coins often have a reddish tint, especially as they age.
The obverse shows the King, and the reverse is a seated female figure with a shield and porpoise:


Danish 20 Kroner Gold coins were minted between 1873 and 1931, together with the 10 Kroner gold coins. They featured three Danish Kings: Christian IX (1863-1906), Frederick VIII (1906-1912) and Christian X (1912-1947).
Denmark went through a period of over 400 years were the King’s name alternated between Christian and Frederick.
If you have a Danish 20 Kroner Gold coin, M J Hughes Coins are interested in buying it.