Norwegian krone - Wikipedia
https://en.wikipedia.org/wiki/Norwegian_kroneThe krone was introduced in 1875, replacing the Norwegian speciedaler/spesidaler at a rate of 4 kroner = 1 speciedaler. In doing so, Norway joined the Scandinavian Monetary Union, which had been established in 1873. The Union persisted until 1914. After its dissolution, Denmark, Norway, and Sweden all decided to keep the names of their respective and since then separ…