Shōgen
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Shōgen (正元) was a Japanese era name (年号, nengō, lit. "year name") after Shōka and before Bun'ō. This period spanned the years from March 1259 through April 1260. The reigning emperors were Go-Fukakusa-tennō (後深草天皇) and Kameyama-tennō (亀山天皇).