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, 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 ' ...
Ichibuban
See also
*
Tokugawa coinage
Tokugawa coinage was a unitary and independent metallic monetary system established by ''shōgun'' Tokugawa Ieyasu in 1601 in Japan, and which lasted throughout the Tokugawa period until its end in 1867.
History
The establishment of Tokugawa coi ...
Notes
{{Japanese currency and coinage
Coins of Japan
Silver coins
Gold coins
Modern obsolete currencies
Economic history of Japan