Swedish Copper Economy Crisis and Copper Plate Currency System

Timeline

1. 1650–1652Falun Copper Mine · Dalarna CountyIn the early 1650s, the Falun Copper Mine (Kopparberget) was still at peak capacity, producing about two-thirds of Europe's total copper output. The Swedish state established the copper plate money (Plåtmynt) system based on this mine, using large copper plates as circulating currency to support imperial finances. During Queen Christina's reign, copper exports were one of the most important sources of foreign exchange, and copper mine shares were deeply bound to the wealth of the Swedish nobility, forming a political-economic alliance centered on the copper industry.
2. 1653–1655Stockholm · SwedenIn the mid-1650s, increased copper production in Japan and the Americas caused European copper prices to fall steadily. Sweden's copper plate currency, issued below the actual value of copper, found it increasingly difficult to maintain credit, and fiscal deficits rapidly widened. Queen Christina abdicated in 1654, and after Charles X Gustav acceded to the throne, facing a severe fiscal situation, the state attempted to ease pressure by cutting the nobility's tax-exemption privileges (the Great Reduction policy) and seeking military expansion.
3. 1655–1659Kingdom of Sweden · SwedenFrom 1655, Charles X Gustav launched the First Northern War, and war expenses placed further pressure on copper industry revenues. The state issued large quantities of copper coinage to cover military costs while exploring the possibility of transitioning to a more stable monetary system. The fiscal pressures and copper dependence of this period directly drove Sweden's later establishment in 1668 of Europe's earliest central bank, the Swedish Riksbank, to address the unsustainability of copper coinage.