1 Mon 'Kan'eitsūhō' NISUIEI, reverse 三 SAN

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	寛寶　通　永 (Translation: Kan`ei Currency)
背面描述	Plain reverse field with a central square hole flanked by a raised rim, and the single Chinese character 三 (San, meaning 'three') positioned below the hole in the lower field, denoting the third year of the Kan'ei era (1626). The character is cast in relief with no additional decoration or border ornament. Variants of this issue are distinguished by the width and form of the 三 character, including the broad 広三 (Kōsan), the standard 正三 (Seisan), and the narrow 狭三 (Kyōsan) types.
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边缘	登录以查看详情
铸币厂	登录以查看详情
铸造量	登录以查看详情
附加信息	Kan'eitsūhō coinage was authorized in 1626 under the Tokugawa shogunate and became one of the longest-running monetary issues in Japanese history, remaining officially valid through the Meiji reforms of the 1870s. The reverse numeral 三 identifies this as a product of one of the provincial mints designated during the early Kan'ei period — a decentralized production system that resulted in considerable variation in flan quality and coin weight across mint sites. The shogunate tolerated this inconsistency for decades before tightening oversight mid-century.

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