Watch List notes:

Bengal Sultanate, Nasir ud-din Mahmud (AH 837-864/1433/4-1459 AD), No mint, Gold Tanka, 'Abu'l Mujahid' Type, Obv: Arabic legend "al mu'ayyad bi-ta'yid al-rahman khalifat allah bi'l hujjat wa'l burhan", Rev: Arabic legend "Nasir ud dunya wa'l din Abu'l Mujahid Mahmud Shah al-sultan", 11.04g, 18.36mm, (G&G # B406), about extremely fine, Extremely Rare.

Note: Nasir ud din Mahmud issued two types in gold tankas, Abu'l Muzaffar & Abu'l Mujahid. Coins bearing Abu'l Mujahid are rarer amongst the two.