Bengal Sultanate, Lakur (Gaur) Mint, Silver Tanka, AH 6XX, In the name of Shams-ud-din Iltutmish (Delhi Sultan)
struck by Governor Ghiyath-ud-din Iwad (First Series AH 614-616/1217-1220 AD), Obv: horseman to the left holding mace & mint name lakur in between the legs of horse within inner circle, almost complete legends of kalima shahada with hijri date in arabic words on the outer circle, Rev: al-sultan al muazzam shams-ud- dunya wal din abul harith iltutmish al - qutbi nasir amir ul-mominin within dotted circle, 10.8g, 28.5mm, (G&G # B19), choice very fine, Extremely Rare.

Ghiyath ud din I'wad took over as governor of Bengal in AH 609 or 610. He does not appear to have struck any coins until AH 614. In AH 616 he struck a series of gold and silver horseman coins in the name of his overlord, the sultan of Delhi, Iltutmish. On these coins Iltutmish is entitled al-qutbi. This may refer to his original position  as a freed slave of Qutb ud din Aibak  or the fact that he belonged to Qutbi rather than to the Mu'izzi faction of nobles. On most of these coins, Iltutmish is also entitled abu'l muzaffar, but in this specimen, undetermined Kunya (Nick name Harith)' for the king, instead of the usual Abu al-Muzaffar, it is clearly seen to be Abu al-Harith ('Father of the lion').