ISLAMIC, Persia (Post-Mongol). Aq Qoyunlu. Ya'qub, AH 883-896 / AD 1478-1490. 1/4 Tanka (Silver, 12 mm, 1.17 g), pre-reform type, Tabriz, date off flan. Within a central square, ‘lā ilāha illā Allāh Muḥammad rasūl Allāh’ (‘There is no deity but Allah. Muhammad is the messenger of Allah’ in Arabic in the spiraled Kufic script); the names of the four Rashidun Caliphs in the four surrounding panels. Rev. Full titulature of the ruler, of which these words are recognizable, ‘al-sulṭān Abu’l-Muẓaffar Yaʿqūb Bahādur khallada Allāh mulkahū. Tabriz’ (‘Sultan Abu’l-Muzaffar Yaʿqub Bahadur. May Allah perpetuate his kingdom. Tabriz’ in Arabic). Album A2522. Somewhat rough, otherwise, good fine.