Riksdaler was the currency of Sweden from the 17th century until the mid-19th century. This currency had several synonyms, depending on the time period and context. In the early 17th century, the Riksdaler was also known as the Speciedaler, and the name Daler was commonly used as a synonym throughout the currency's history. In the 18th century, the Skilling was also a common term used to describe smaller denominations of the Riksdaler, while the Riksbankducaten was used to describe the official currency of the Riksbank. Additionally, the Riksdaler was sometimes referred to as a Krona, which became the official currency of Sweden in the late 19th century.