Dōza (copper monopoly)

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Dōza (銅座 dōza?) 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 corporate entity with responsibility for supervising the minting of copper coins and for superintending all copper mines, copper mining and copper-extraction activities in Japan.[4]

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