Obverse. Photo © NumisCorner.com
  • 100 Mon 1835-1870, C# 7, Japan, Ninkō
  • 100 Mon 1835-1870, C# 7, Japan, Ninkō
  • 100 Mon 1835-1870, C# 7, Japan, Ninkō, Edge with mint’s mark (shirushi, 印)

The Tenpō Tsūhō, a coin from the Edo period, held a denomination of 100 mon and was initially minted in the 6th year of the Tenpō era (1835). All original coins were produced in Edo, present-day Tokyo. They were then transported to other mints, where the distinctive mint mark (shirushi, 印) was placed on the coin's edge. The coin remained in circulation for 35 years before its production ceased during the Meiji Restoration, coinciding with the introduction of the Japanese yen. In contemporary times, these coins are sought after as "lucky charms" and are avidly collected by numismatists.

The Tokugawa Shogunate, also recognized as the Tokugawa Bakufu and the Edo Bakufu, stood as the final military government of feudal Japan, existing from 1603 to 1867. The shōgun, who was the head of the government, hailed from the Tokugawa clan. This shogunate operated from Edo Castle, and this period of rule is commonly referred to as the Edo period.

Tenpō (天保) denotes a specific era in Japanese history, coming after Bunsei and preceding Kōka. This era spanned from December 1830 to December 1844. Ninko-tennō (仁孝天皇) reigned as the emperor during this period.


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.

A kaō or huāyā is a stylized signature or a mark used in East Asia in place of a true signature.

Gotō San'emon, a member of the Kinza mint's Gotō family (後藤家), descendants of Gotō Shozaburo Mitsutsugu, a metalworker and engraver from Kyoto appointed by shōgun Tokugawa Ieyasu in 1601 to oversee the Edo mint of his shogunate and oversee its coinage.


100 Mon

Tenpō Tsūhō, Tokugawa Shogunate
C# 7
Material Bronze
Weight 20.7 g
Diameter -
Width 32 mm
Height 49 mm
Thickness 2.6 mm
Shape oval with a square hole
Alignment Medal
Japan Mint

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