Kocho Junisen

kōchō jūnisen (皇朝十二銭) (aka jūnizeni) is a general term for 12 types of copper coins minted in Japan under the Ritsuryo system from 708 (Wadō 1st year) to 963 (Ōwa 3rd year).[1] All of the included coins are circular in shape, have a square hole in the center, and were worth 1 mon.[lower-alpha 1]

Coins
ImageInscriptionKyūjitaiShinjitaiYear of introduction
(Julian calendar)
Wadōkaichin和同開珎和同開珎708
Mannen Tsūhō萬年通寳万年通宝760
Jingū Kaihō神功開寳神功開宝765
Ryūhei Eihō隆平永寳隆平永宝796
Fuju Shinpō富壽神寳富寿神宝818
Jōwa Shōhō承和昌寳承和昌宝835
Chōnen Taihō長年大寳長年大宝848
Jōeki Shinpō饒益神寳饒益神宝859
Jōgan Eihō貞觀永寳貞観永宝870
Kanpyō Taihō寛平大寳寛平大宝890
Engi Tsūhō延喜通寳延喜通宝907
Kengen Taihō乹元大寳乾元大宝958

See also

Notes
  1. "Mon" was a unit of currency (ex: Dollar) before the Muromachi period when they took a physical form.

References
  1. Nussbaum, Louis-Frédéric (2005). "Wadō-kaihō". Japan Encyclopedia. p. 539. ISBN 978-0674017535.


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