page_title: Wadōkaichin
hierarchical_section_title: Wadōkaichin
caption_attribution_description: English: Tang Dynasty Kai Yuan Tong Bao coin (Chinese: 開元通寶; Japanese: Kaigentsuho), first minted in AD 621 in Chang'an, a model for the Japanese 8th century Wadōkaichin.
context_page_description: Wadōkaichin, also romanized as Wadō-kaichin or called Wadō-kaihō, is the oldest official Japanese coinage, having been minted starting on 29 August 708 on order of Empress Genmei.
context_section_description: Wadōkaichin (和同開珎), also romanized as Wadō-kaichin or called Wadō-kaihō, is the oldest official Japanese coinage, having been minted starting on 29 August 708 on order of Empress Genmei.
caption: The Chinese Kāiyuán Tōngbǎo coin (開元通寶), first minted in 621 CE in Chang'an, was the model for the Japanese Wadō Kaihō.
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