Kosho_(era)
Kōshō
Period of Japanese history (1455–1457)
Kōshō (康正) was a Japanese era name (年号, nengō, lit. "year name") after Kyōtoku and before Chōroku. This period spanned the years from July 1455 through September 1457.[1] The reigning emperor was Go-Hanazono-tennō (後花園天皇).[2]