Persia (Post-Mongol). Aq Qoyunlu. Hamza, AH 841-848 / AD 1438-1444. Akçe (Silver, 15 mm, 1.64 g, 7 h), Bayburt, AH 845 = 1441/2. Within a square, ‘lā ilāha illā / Allāh Muḥammad / rasūl Allāh’ (‘There is no deity but Allah. Muhammad is the messenger of Allah’ in Arabic); the names of the four Rashidun Caliphs in Arabic in the four surrounding panels: Abūbakr / ʿUmar / ʿUthmān / ʿAlī. Rev. Within a central circle, ‘ḍarb Bāyburt / fī sana 845’ (‘Struck in Bayburt in the year 845’ in Arabic); in the margin, traces of ‘sulṭān al-aʿẓam Ḥamza sulṭān khallada Allāh mulkahū’ (‘The supreme sultan, Sultan Hamza. May Allah perpetuate his kingdom’ in Arabic). Album 2507B. Extremely rare. Some edge splits, otherwise, good very fine.