757 (Tenpyō-hōji 1'): The new era began in the 8th month of Tenpyō-shōhō 9.[4]
760 (Tenpyō-hōji 4): Newly minted coins were put into circulation – each copper coin bearing the words Mannen Ten-hō, each silver coin bearing the words Teihei Genhō, and each gold coin bearing the words Kaiki Shōhō.[5]
26 January 765 (Tenpyō-hōji 9, 1st day of the 1st month): In the 6th year of Junnin's reign, the emperor was removed from his role as monarch; and the succession (senso) was received by former-Empress Kōken. Soon after, Empress Shōtoku's reign was confirmed by ceremonies (sokui).[6]
♯The Northern pretenders did not recognize the Genkō era. Gentoku was used in the Northern Court until 1332. ₪The Shōkyō era was recognized only by the Northern pretenders, not by the Southern Court. ‡ Upon reunification of the Northern and Southern Courts in 1392, Genchū was discontinued. Meitoku was used until 1394.