Bengal Sultanate, Shihab ud-din Bayazid (AH 815-817/1412-1414 AD), Firuzabad Mint, Silver Tanka, AH 816, Large Flan, Obv: al-mu’ayyad bi-ta’yid al-rahman in the margins, shihab ud dunya wa’l din abu’l muzaffar bayazid shah al-sultan within the scalloped circle, Rev: nasir amir al-mu minin ghawth al-islam wa’l muslimin khuld mulkahu within octofoil, at margin four caliphs name, mint and date, 10.71g, 31.5mm, (G&G # B281), about very fine, with counter marks, Scarce.