A Tugra (or tughra) is an outstanding calligraphic imperial design, monogram or a kind of signature of the Ottoman Sultans. It bears the names of the sultan and his father and the prayers “el muzaffer daima-ever victorious” in most of them. For example: the tugra content of Suleyman the Magnificient is “Suleyman shah bin selim shah han el-muzaffer daima”.”bin” means “the son of”-. A tugra was not written by the sultans personally, but personnel called nisanci, tughrakesh, tughrai or tughranuvis were in charge of doing this work. It was forbidden to write a tugra without authorization. Also tugras were carved on some sultans’ seals.