In Japan, it was considered as the first mintage issued by the central government after many years, since the 'Kocho -Jyunisen' coin (the twelve types of coins minted by the imperial court) was discontinued in the Heian Period.
日本では平安時代の皇朝十二銭以来久しく途絶えていた中央政府による鋳造貨幣であるとされる。