This is the Seal of BAHMAN MĪRZĀ (fl. 1225/1810-1301/1883-84), the fourth son of ʿAbbās Mīrzā (q.v.) and brother of Moḥammad Shah (r. 1250-64/1834-48). After Moḥammad Mīrzā succeeded Fatḥ-ʿAlī Shah, he appointed Bahman Mīrzā (at the time governor of Ardabīl) governor of Tehran (19 Šaʿbān 1250/21 December 1834). Later Bahman Mīrzā became the governor of Hamadān and, when his uterine brother Qahramān Mīrzā died, succeeded him as governor of Azerbaijan. (Encyclopedia Iranica: http://www.iranicaonline.org/articles/bahman-mirza)