The was a monetary unit of Japan. The Ichibuban could be either made of silver or gold, in which case it was a quarter of a Koban. The gold Ichibuban of 1714 (佐渡一分判金) had a weight of 4.5 g, with 85.6% of gold and 14.2% of silver. The silver Ichibuban from 1837 to 1854 (

Tenpō was a after '' Bunsei'' and before '' Kōka.'' The period spanned from December 1830 through December 1844. The reigning emperor was . Introduction Change of era * December 10, 1830 () : In the 13th year of ''Bunsei'', the new era name of ' ...

Ichibugin, 天保一分銀, "Old Ichibuban") weighed 8.66 g, with an alloy of 0.21% gold and 98.86% silver.Toi Museum The Nibuban (二分判) was worth double the Ichibuban, and half a Koban and was also a rectangular coin.

Gold Ichibuban (一分判金)

File:Keicho-1buban.jpg,

Keichō was a after ''Bunroku'' and before ''Genna''. This period spanned from October 1596 to July 1615. The reigning emperors were and . Change of era * 1596 : The era name was changed to ''Keichō'' to mark the passing of various natural disasters ...

Ichibuban File:Shotokukoki-1buban.jpg, Kyōhō Ichibuban File:Bunzi-1buban.jpg, Genbun Ichibuban File:Hozi-1buban.jpg,

Bunsei was a after ''Bunka'' and before ''Tenpō''. This period spanned the years from April 1818 through December 1830. The reigning emperor was . Change of era * April 22, 1818 (): The new era name was created to mark the enthronement of the emper ...

Ichibuban File:Hozi-1buban.jpg,

Ichibuban

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{{Japanese currency and coinage Coins of Japan Silver coins Gold coins Modern obsolete currencies Economic history of Japan

Gold Ichibuban (一分判金)

See also

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