Sultans of Bengal, Silver tanka of Ikhtiyar al-Din Ghazi (in East Bengal) (1349-1352 AD), Hadrat Jalal Sunargaon mint, AH 751, G&G B138 (Listed as RR), 10.97g. Obv: Arabic legend al-sultan al-a'zam ikhtiyar al-dunya wa'l din abu'l muzaffar ghazi shah al-sultan bin al sultan. Rev: In circle, Arabic legend yamin al-khalifa nasir amir al-mu'minin with date and mint-name around. About extremely fine, Very rare.