Bengal Sultanate, Ghiyath-ud-Din Mahmud(AH 939-945/1532-1538 AD),Silver Tanka,Obv:al sultan bin al sultan ghiyath al dunya wal din abul muzaffar mahmud shah,Rev:al sultan bin husain shah al sultan khuldallahu mulkahu wa sultanahu,10.07g, 21.88mm,(GG # B941),about very fine, Rare.