Watch List notes:

Bengal Sultanate, Nasir ud-din Mahmud (AH 837-864/1434-1459 AD), Dar-ul-Darb Mint, Silver Tanka, AH 861, Obv: Arabic legend "Nasir ud dunya wa'l din abu'l muzaffar Mahmud Shah al-sultan", Rev: Arabic legend "gowth al Islam wa'l Muslimin khuld mulkahu" with Hijri year, 10.7g, 32.0mm, (G&G # B 442), about very fine, Rare.