King Otto, who was King of Bavaria from 1886 to 1913, was unable to mint coins as he was declared unfit to rule due to mental illness. He was replaced by two regents, Luitpold and Lajos, who minted their own money. King Otto's name and portrait are not on these coins, only those of the regents. The Bavarian coinage operated as part of the German Empire during this period, and the German mark and pfennig were the official currency. The coinage was characterized by the fact that the coat of arms of the House of Wittelsbach, the double-headed eagle and the Bavarian lion can be seen on the back of the coins. The Bavarian coinage was not significant in this period, and most of the coins were made with the names and portraits of the regents. Therefore, King Otto's coinage did not exist, only that of the regents.