Bengal Sultanate, coins Struck INO Jalalat al-din Radiyya / Razia Sultan (AH 634-637, 1236-1240 AD), Silver Tanka, 10.59 gms, Lakhnauti Mint, Obv. al-sultan al-a'zam Jalalat ud-dunya wa'l din malikah ibnt Iltutmish al-sultan nusra amir al mum'inin, Rev. fi ahd al imam mustansir amir al mominin with mint name Lakhnauti in margin, G&G # B57, very fine+, very rare.