Ichibuban

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.

Gold Ichibuban (一分判金)

• 
  Keichō Ichibuban
• 
  Kyōhō Ichibuban
• 
  Genbun Ichibuban
• 
  Bunsei Ichibuban
• 
  Tenpō Ichibuban

See also

• Tokugawa coinage

Notes

• v
• t
• e

Japanese currency (pre-yen)

Topics

• Currency Museum (Japan)
• Kocho Junisen
• List of Japanese cash coins by inscription
• List of Japanese coinage patterns
• Mother coin
• Nagasaki trade coins
• Numismatic charm
• Momme (unit)
• Yen currency

Coinage

Pre-Edo	Mumonginsen 667–672 Huhonsen 683 Wadōkaichin 708–958 Kaiki Shoho 760 Taihei Genpō 760
Edo	Koban 1601–1868 Kan'ei Tsūhō 1626–1868 Ichibuban 1714–1854 Shu (silver) 1772–1869 Shu (gold) 1824–1869 Tenpō Tsūhō 1835-1870 Ichibugin 1837–1869
Multi	Chinese coinage c. 1101–1700 Mon 1336–1870 Bitasen 1404–1670 Ryukyuan mon 1454–1879 Ryō 1500s–1871 Ōban 1573–1862

Paper currency

• Edo period scrip
  • Hatamoto
• Negotiable instrument
• Rice stamps