According to Ottfried Neubecker, the Bey of Tunis also had his own flag. This flag was most likely a simple personal banner of the ruler, as it floated above the Bardo Palace, the Citadel of Tunis, on navy ships, and also in the center of the coat of arms in Tunisia. It was used at a number of public ceremonies—including at the proclamation of the Ottoman constitution on 21 March 1840—until the abolition of the Bey monarchy on 25 July 1957.