Dōza (銅座) was the Tokugawa shogunate's officially sanctioned copper monopoly or copper guild (za)[1] which was created in 1636[2] and (1701-1712, 1738-1746, 1766-1768).[3]

Initially, the Tokugawa shogunate was interested in assuring a consistent value in minted copper coins; and this led to the perceived need for attending to the supply of copper.

This bakufu title identifies a regulatory agency with responsibility for supervising the minting of copper coins and for superintending all copper mines, copper mining and copper-extraction activities in Japan.[4]

See also


  1. Jansen, Marius. (1995). Warrior Rule in Japan, p. 186, p. 186, at Google Books, citing John Whitney Hall. (1955). Tanuma Okitsugu: Forerunner of Modern Japan.
  2. Schaede, Ulrike. (2000). Cooperative Capitalism: Self-Regulation, Trade Associations, and the Antimonopoly Law in Japan, p. 223.
  3. Shimada, Ryuto. (2005). The Intra-Asian Trade in Japanese Copper by the Dutch East India Company, p. 51., p. 51, at Google Books
  4. Hall, John Wesley. (1955) Tanuma Okitsugu: Forerunner of Modern Japan, p. 201.


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