1 Mon 'Ryuhei Eihō' - Kammu

发行方	Japan
年份	796-818
类型	登录以查看详情
面值	登录以查看详情
货币	登录以查看详情
材质	登录以查看详情
重量	登录以查看详情
直径	登录以查看详情
厚度	登录以查看详情
形状	登录以查看详情
制作工艺	登录以查看详情
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雕刻师	登录以查看详情
流通至	登录以查看详情
参考资料	DHJ#1.30 - 1.39

正面描述	登录以查看详情
正面文字	登录以查看详情
正面铭文	登录以查看详情
背面描述	Plain reverse exhibiting the characteristic flat, unadorned field of early Japanese cast copper coinage. The central square perforation is framed by a raised square boss, itself surrounded by a broad, smooth inner field and a raised outer rim. No inscriptions, symbols, or decorative elements are present. The surface shows the typical textured finish resulting from the sand-casting process used during the Heian period.
背面文字	登录以查看详情
背面铭文	登录以查看详情
边缘	登录以查看详情
铸币厂	登录以查看详情
铸造量	ND (796-818) - DHJ# 1.30; large characters - ND (796-818) - DHJ# 1.31; middle side stroke of 永 goes over フ - ND (796-818) - DHJ# 1.32; Low 寳 - ND (796-818) - DHJ# 1.33; compact 永 - ND (796-818) - DHJ# 1.35; small flan, large characters - ND (796-818) - DHJ# 1.36; small flan, low 寳 - ND (796-818) - DHJ# 1.37; small flan, narrow 平 with long central down stroke - ND (796-818) - DHJ# 1.38; small flan, small characters - ND (796-818) - DHJ# 1.39; small flan, middle horizontal stroke of 永 as wide as hole -
附加信息	Eiraku Tsūhō this is not. The Ryūhei Eihō was the third emission in Japan's Kōchōjūnisen series — twelve successive copper coinages issued between 708 and 958 as the imperial court attempted, largely without success, to establish a monetized economy among a population that preferred rice and cloth as exchange media. Kammu's reign saw aggressive fiscal and military expenditure, including the costly campaigns against the Emishi in northern Honshū, and the coinage was partly a mechanism for funding that ambition. Circulation remained thin outside the capital region. By the time the series ended in the mid-tenth century, the experiment had effectively failed.