Ryo Kato
Ryo may refer to: * Ryō, a gold currency unit in pre-Meiji Japan Shakkanhō system * Ryō (actress) (born 1973), Japanese model, actress, and singer * Ryō (given name), a unisex Japanese given name * Ryo, Georgia, an unincorporated community in Gordon County, in the U.S. state of Georgia See also * RYO (other) Ryo may refer to: * Ryō, a gold currency unit in pre-Meiji Japan Shakkanhō system * Ryō (actress) (born 1973), Japanese model, actress, and singer * Ryō (given name), a unisex Japanese given name * Ryo, Georgia Ryo is an unincorporated communit ...

Ryō
The was a gold currency unit in the shakkanhō system in pre- Meiji Japan. It was eventually replaced with a system based on the ''yen''. Origins The ''ryō'' was originally a unit of weight from China, the ''tael.'' It came into use in Japan during the Kamakura period. By the Azuchi–Momoyama period it had become nearly uniform throughout Japan, about 4.4 ''monme'' as a unit of weight (about the same as 16.5 grams). During the Sengoku period, various local ''daimyō'' began to mint their own money. One of the best known and most prestigious of these private coins was the ''koshukin'' issued by the warlord Takeda Shingen, who had substantial gold deposits within his territories. The value of the koshukin was based on its weight, with one ''koshukin'' equal to one ryō of gold, and thus stamped with its weight (about 15 grams). During the Tenshō period (1573–1592), one ryō was equal to four ''koku'' of rice, or 1000 brass coins. Tokugawa period The Tokugawa shogunate at ...
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