High quality and very rare silver tanka of Jalal ud-Din Muhammad Shah (1415-1432/3 AD), Dakhil Banjaliya mint, Bengal Sultanate, India - unpublished year and high quality

Arabic inscriptions in Tughra characers on both sides: Jalal al-din Mohammed Shah al-Sultan Nasir al-silam wa'l muslimin Khalllada Mallkahu / Khalifat Allah Nasir al-Islam wa'l muslimin, mint and date below. Dakhil "Benjaliya" mint, dated to 831 AH = 1428 AD. Unpublished date (this type known only from 832 AH). 29mm, 10.7 grams. "The coins of the Indian Sultanates" B367.

Rare, very high quality piece.