Danish rigsdaler is the former currency of Denmark that was used until 1875, and over the years, it has been called various names that refer to the same thing. These names include Rigsdaler, Speciedaler, Species, Ducat, and Mark. Today, the currency of Denmark is the Danish krone. However, the Danish rigsdaler is still a popular topic among historians, numismatics, and collectors of old coins or banknotes. Its exchange value against other currencies like the British pound, the Dutch guilder, and the German thaler was significant during its time, and it played a crucial role in international trade and economic policies.