Watch List notes:

Bengal Sultanate, Saif ud-din Firuz (AH 893-896/1488-1490 AD), Dar ul-Darb Mint, Silver Tanka, AH 893, Obv: The Kalima Shahada, Hijri year 893 & mint Dar ul Darb at the bottom, Rev: Arabic legend "Saif ud-dunya wa'l din Abu'l Muzaffar Firuz Shah al-sultan khuld allahu mulkahu wa sultanahu", 10.46g, 25.00mm, (G&G # B650), shroff marks, about extremely fine, Rare.