Bengal Sultanate

Sultan: Saif-ud-din Hamzah Shah (AH 813-815/1410-1412 AD)

Mint: Satgaon

Denomination: Silver Tanka

Obv: saif-ud-dunya wa'l din abu'l mujahid hamzah shah bin a'zamshah al-sultan in square, al-mu'ayyad bi-ta'yid al-rahman in margin

Rev: nasir amir al-mu'minin ghawth al-islam wa'l muslimin khuld mulkahu in circle, mint name in margin

Weight: 10.3g, Size: 29.00mm 

Reference: G&G # B270

Condition: about fine, with multiple counter marks, Rare.