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The Tenpō Tsūhō was an Edo period coin with a face value of 100 mon, originally cast in the 6th year of the Tenpō era (1835). All mother coins were produced in Edo (present day Tokyo) before they were sent to other mints where they would place the individual mint’s mark (shirushi, 印) on the edge of the coin. The coin circulated for 35 years, and stopped being produced during the Meiji Restoration after the introduction of the Japanese yen. Today these coins are now sold as "lucky charms" as well as being collected by numismatists.
The Tokugawa Shogunate, also known as the Tokugawa Bakufu and the Edo Bakufu, was the last feudal Japanese military government, which existed between 1603 and 1867. The head of government was the shōgun, and each was a member of the Tokugawa clan. The Tokugawa shogunate ruled from Edo Castle and the years of the shogunate became known as the Edo period.
Tenpō (天保) was a Japanese era name (年号 nengō, "year name") after Bunsei and before Kōka. The period spanned from December 1830 through December 1844. The reigning emperor was Ninko-tennō (仁孝天皇).
Depicts inscription "Tenpō" (天保) a reference to the era this coin was designed in, and "Tsūhō" (通寳) which means "circulating treasure" or currency.
Depicts a value 當百 (Tō Hyaku, equals 100), and the Kaō of Gotō San'emon.
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