Image: Tughra of Bayezid I

Description: Tughra (i.e., seal or signature) of Bayezid I, Sultan of the Ottoman Empire (1389-1402). An explanation of the different elements composing the tughra can be found here.
Title: Tughra of Bayezid I
Credit: Egypt State Information Service: http://www.sis.gov.eg/PDF/Ar/History/0809000000000000210002.pdf The original PDF document from which this tughra was cropped is also hosted on Commons: File:Tughras.pdf
Author: Unknown court calligrapher.
Permission: This work first published in the Ottoman Empire is now in the public domain because the Empire's copyright formalities were not met (copyright notice, registration, and deposit), or because the copyright term (30 years after the death of the author, sometimes less) expired before the Empire was dissolved.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No