1 Króna - Christian X

Iceland's monetary system operated in an unusual half-sovereign limbo during this period — the island remained under Danish sovereignty until 1944, yet the National Bank of Iceland issued its own coinage with Christian X's portrait in his capacity as King of Iceland separately from his role as Danish monarch. The 1915 Act establishing Iceland's home rule created the legal architecture that made this dual-currency arrangement possible.

The aluminium bronze alloy was a deliberate choice for durability in Iceland's harsh maritime climate, where copper-nickel and silver had historically fared poorly in circulation.