Sultans of Bengal, Silver tanka of Jalal al-Din Muhammad (2nd reign, 1418-1432/3), 'Tughra on both sides' type, Dakhil "Banjaliya" mint, Date AH831 G&G B367 (This date 831 AH Not Listed in anywhere), 8.64g. physically coin look ok but Due to uncertain Weight of this coin, genuinety of this coin is doubtful.