Ōban

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.[1]

Keichō gold coinage: Ōban, Koban, Ichibuban, 1601-1695.
This article is about the Japanese coinage. For the anime, see Ōban Star-Racers. For the print size, see Woodblock printing in Japan.
The Ōban (大判) was the largest denomination, valued at 10 Ryōs. Here, a Keichō Ōban, minted from 1601.
Maneki Neko, with Ōban attached to collar

The first Oban – Tenshō Ōban (天正大判) – were minted by the Gotō family under the orders of Hideyoshi in 1588.[2]

The Tenshō Ōban was equivalent to ten Ryōs, or ten Koban (小判) plates, with a weight of 165 g.

Notes
  1. Metzler p.15
  2. The Cambridge History of Japan: Early modern Japan by John Whitney Hall p.61
gollark: EE teachers... do not... cause and know the entire contents of the universe...?
gollark: And God, who is omnipotent, can simply predict them anyway.
gollark: Well, random things don't imply that "you" choose anything or that you can't make good enough predictions.
gollark: God chose to create humans. They had exact knowledge of what the humans would do. QED.
gollark: And the empirical things which are vaguely related go the other way.

References
  • Mark Metzler (2006). Lever of empire: the international gold standard and the crisis of liberalism in prewar Japan. Volume 17 of Twentieth Century Japan: The Emergence of a World Power. University of California Press. ISBN 0-520-24420-6.
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