Large size - Oban

Japanese: 大判 - おおばん

One of the gold coins used during the Azuchi-Momoyama and Edo periods. Initially, the shape was not fixed, and it was rectangular or oval, and there was no seal. In 1588, Toyotomi Hideyoshi ordered Goto Tokujo to cast the Tensho oban, an oval shape about 15 cm long and 10 cm wide, with an ink inscription "10 ryo, Goto (kao)" in the center. This format was followed thereafter, and the Tokugawa clan also issued five types from the oban za, starting with the Keicho oban (→ Keicho gold and silver) in 1601, followed by the Genroku, Kyoho, Tenpo, and Man'en coins. Oban coins were rarely circulated in general, and were used for prizes and gifts. The 10 ryo of the oban represented the weight of gold dust, and did not necessarily correspond to 10 koban coins. The Keicho oban was about 8 ryo 2 bu of the koban, and the Kyoho oban was about 7 ryo 2 bu of the koban.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

安土桃山，江戸時代に通用した金貨の一つ。当初は長方形，楕円形など形式も一定せず，極印書判もなかった。天正 16 (1588) 年豊臣秀吉が後藤徳乗に命じて鋳造させた天正大判は縦約 15cm，横約 10cmの楕円形で，中央に「拾両，後藤 (花押) 」の墨書がある。以後この形式が踏襲され，徳川氏も慶長6 (1601) 年の慶長大判 (→慶長金銀 ) 以下，元禄，享保，天保，万延の5種を大判座から発行させた。大判は一般に流通することは少く，賞賜，贈答などに用いられた。また大判の 10両は砂金の量目を表わし，必ずしも小判 10枚には相当しなかった。慶長大判は小判の約8両2分，享保大判は約7両2分にあたった。

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