Watch List notes:

India, Princely States, Hyderabad, silver gilt pattern ashrafi, AH.1320, Chahar Minar gateway, rev. Persian legend, in plastic holder, graded by NGC as Proof 65, a gem proof, extremely rare and to our knowledge not recorded in any of the numismatic literature
£1000-1500
We know of only 3 or 4 specimens of this type in silver gilt.