Ōban
Sign in to savethumb|The Ōban (大判) was the largest denomination, valued at 10 Ryōs. Here, a [[Keichō Ōban, minted from 1601.]] thumb|Maneki Neko, with Ōban attached to collar An Ōban (大判) was a monetary ovoid gold plate, and the largest denomination of Tokugawa coinage. Tokugawa coinage worked according to a triple monetary standard, using gold, silver and bronze coins, each with their own denominations. thumb|left|Keichō gold coinage: Ōban, Koban, [[Ichibuban, 1601–1695.]] The first Oban – Tenshō Ōban (天正大判) – were minted by the Gotō family under the orders of Hideyoshi in 1588.
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thumb|The Ōban (大判) was the largest denomination, valued at 10 Ryōs. Here, a [[Keichō Ōban, minted from 1601.]] thumb|Maneki Neko, with Ōban attached to collar An Ōban (大判) was a monetary ovoid gold plate, and the largest denomination of Tokugawa coinage. Tokugawa coinage worked according to a triple monetary standard, using gold, silver and bronze coins, each with their own denominations. thumb|left|Keichō gold coinage: Ōban, Koban, [[Ichibuban, 1601–1695.]] The first Oban – Tenshō Ōban (天正大判) – were minted by the Gotō family under the orders of Hideyoshi in 1588.
The Tenshō Ōban was equivalent to ten Ryōs, or ten Koban (小判) plates, with a weight of 165 g.