Shams Al Din Iltutmish, Silver Tanka, 10.37g, “Bengal” type, “Caliph al mustansir billah”, Lakur Mint, AH 633, Obv: “al sultan al azam shams al duniya wa’l din abu al muzaffar iltutmish al sultan nasrat amir al mu’minin”, Rev: “Shahada” with caliph’s name (G&G# B50). Complete mint name and date in margin. Extremely fine for type, extremely rare.