Kaei era

Kaei (嘉永) was a Japanese era name (年号,, nengō,, lit. "year name") after Kōka and before Ansei. This period spanned the years from February 1848 through November 1854. The reigning emperor was Kōmei-tennō (孝明天皇).

The era name is derived from an aphorism in the Book of Song: "A wise Emperor receives much help, One who esteems comfort is on the outside" (思皇享多祐、嘉楽永無央).

Branched ("Edasen" 枝錢) Mon coins of Tokugawa coinage, of the Kaei period.

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