Faux Koban MILLIONAIRE Coin Ingot
Koban (coin)From Wikipedia, the free encyclopedia
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Koban
The
koban (小判) was a
Japanese oval
gold coin in the
Edo period feudal Japan, equal to one
ryō, another early Japanese monetary unit. It was a central part of
Tokugawa coinage.
The
Keichō era
koban, a
gold piece, contained about one ryō of gold, so that koban carried a face value of one ryō. However, successive
mintings of the koban had varying (usually diminishing) amounts of gold. As a result, the ryō as a unit of weight of gold and the ryō as the face value of the koban was no longer synonymous.