In this definitive study of the intra-Asian trade in Japanese copper trade by the Dutch East India Company, the author argues that the trade in this commodity reaped high profits. Despite the huge imports of British copper by the English East India Company during the eighteenth century, the Dutch Company successfully continued to sell Japanese copper in South Asia at higher prices. Compared to the capital-intensive development of British mines in the age of the Industrial Revolution, the copper production in Tokugawa Japan was characterized by a labour-intensive 'revolution' which also made a big impact on the local economy.