Bengal Sultanate (1203-1576) 1412-14 Rare silver tanka of Bayazid , Firuzabad, Bengal Sultanate, India (B-280)

Al-Muayyad bi-tayid al-rahman shihab al-dunya wa'l din abu'l muzaffar bayazid shah al-sultan / Nasir amir al-muminin ghawth al-islam wa'l muslimin, date and mint in the circular margin. Firuzabad mint, date off-flan. 31mm, 10.70 grams. "The coins of Indian Sultanates" #B-280.

Coins of the short lived Sultan Bayazid are all rare.

Shihab ud-Din Bayazid Shah was a short-reigning ruler of the Bengal Sultanate and a son of Ghiyasuddin Azam Shah. He came to the throne around 1412–1413 during a period of instability following his father’s death, but his authority was weak and challenged by powerful regional elites. His brief reign lasted only about a year before he was overthrown amid internal disorder, paving the way for the rise of the Hindu noble Raja Ganesha, who soon took control of Bengal’s politics. 

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