Bengal Sultanate, Ghiyath al-din bahadur, Ghiyathpur Khitta (720-724 AH), Silver Tanka, Obv: al sultan-ul-Azam, ghiyath-ud-dunya wal deen abul muzaffar bahadur shah al sultan bin sultan, Rev: al imam-ul-mutasim amir-ul-mominin, 10.8g, 26.91mm, (G&G #B105), about extremely fine. Rare.