The Ichibuban (一分判) was a monetary unit of Japan.[1] The Ichibuban was a gold coin that was worth 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 Ichibugin, 天保一分銀, "Old Ichibuban") weighed 8.66 g, with an alloy of 0.21% gold and 98.86% silver.[2]
The Nibuban (二分判) was worth double the Ichibuban, and half a Koban and was also a rectangular coin.
^The Cambridge History of Japan: Early modern Japan by John Whitney Hall p.61 [1]
the Ichibuban, and half a Koban and was also a rectangular coin. Keichō Ichibuban Kyōhō Ichibuban Genbun Ichibuban Bunsei Ichibuban Tenpō Ichibuban Japan...
gold coin. The Ichibuban (一分判) 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)...
large ovoid gold Koban, under it a small gold Ichibuban, top right a silver Ichibugin, under it a silver Ichibuban and a bronze round "Kan'ei tsūhō" Mon....
currency - Iran Elymais - Iran Ryō Mon Japanese cash Gold plates Ōban Koban Ichibuban Yen Military yen Invasion money B yen Hwan - Korea Mun Yang Imperial Won...
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