Shihab al din Bayazid Shah, Silver Tanka, 10.21g, Big Flan, Firuzabad Mint, AH 816, Obv: “al mu’ayyad bi ta yid al Rahman shihab al dunya wa’l din abu’l muzaffar bayazid shah al sultan” in scalloped circle, Rev: “nasir amir al mu minin ghawth al islam wa’l muslimin”, Complete name of four caliphs, Mint and date in margin within octofoil (G&G# B281). Extremely fine for type, very rare.