Bengal Sultanate, Ghiyath-ud-din A’zam (AH 792-813/1389-1410 AD), Hadrat Firuzabad Mint, Silver Tanka, AH 813, Obv : Arabic legend "Ghiyath-ud dunya wa’l din abu’l muzaffar A’zam Shah ibn Sikandar Shah ibn Ilyas Shah al-sultan", in the margin "al-sultan al-’azam al-mu’ayyad bi-ta’yid al-mulk al-Rahman", Rev: Arabic legend "Nasir Amir al-mu’minin Ghawth al-islam wa’l muslimin khuld mulkahu" within the square, "zarb Hadrat Firuzabad" & "Sana 813 Hijri year" in the margin, 10.70g, 30.18mm, (G&G # B243), no test mark, UNC, Scarce.