Watch List notes:

(x) Chittagong trade coinage, in the name of Ghiyath al-Din Bahadur (1555-60), Tanka, 10.5g, mintless type, AH959, naming bahahdur shah on the obverse (G & G B. 1004 ;Mitch. Bangladesh & Arakan 289), good very fine and rare (Tikkanen 103).
Goron notes that coins of this type were probably struck at Ramu.
Estimate: £100 - £150