Tenna

was a after "Enpō" and before "Jōkyō." This period started in September 1681 and ended in February 1684. During this time, the emperor was .
The "nengō" "Tenna" means "Peace of Heaven".
Events of the "Tenna" era.
In Tenna, the first book was written about the coins of Japan. The work was entitled "Classified Collection of Coins" ("Kwacho Kuien").